Analyst upgrades:

• Sierra Wireless (NASDAQ: SWIR) was upgraded at Jefferies to Hold from Underperform following Q3 results. The firm believes the Wavecom acquisition integration is progressing better than expected and finds the valuation attractive at current levels. The firm raised its price target to $10 from $5.
• Boston Properties (NYSE: BXP) was upgraded to Buy from Hold at Deutsche Bank to reflect the company's recapitalization and better-than-expected occupancy. The firm raised its target to $69 from $46.
• Wyndham (NYSE: WYN) was upgraded to Outperform from Market Perform at FBR Capital after the shares sold off following the company's Q3 results. The firm raised its target to $23 from $15.
• Human Genome (NASDAQ: HGSI) was upgraded to Overweight from Neutral at JPMorgan. Target was raised to $25 from $14.
• Urban Outfitters (NASDAQ: URBN) was upgraded to Overweight from Market Weight at Thomas Weisel as they expect a "meaningful sales and earnings improvement in Q4." Target was raised to $39 from $32.
• Methanex (NASDAQ: MEOH) was upgraded to Buy from Neutral at UBS, citing improved methanol demand following the Q3 report. Target was raised to $19.50 from $17.
• Buffalo Wild Wings (NASDAQ: BWLD) was upgraded at Raymond to Market Perform from Underperform.

A fake press release circled the internet this morning, reporting that Disney (NYSE: DIS) was acquiring Imax (NASDAQ: IMAX) for $1.5 billion -- a premium of 90% to the company's market capitalization.

Shares of Imax jumped 6% on the news, but it was quickly squashed by the company which said in a statement that "[Imax] has not been acquired, nor is it in discussions with The Walt Disney Company about a potential acquisition."

There are a couple possibilities here. One is the pump and dump scenario, where someone bought a bunch of share -- or options -- hoping to pump up the stock price ever so briefly, cash out, and book a nice windfall before the stock came back down to earth.

IMAX Corporation (NASDAQ: IMAX) is a recent featured stock from Jim Oberweis, Jr. Here, the money manager and editor of The Oberweis Report explains why his clients own 600,000 shares.

"IMAX specializes in motion picture technologies and large-format film presentations. IMAX designs and manufactures large-format digital and film-based theater systems.

"The company sells or leases such systems to its customers, and converts two-dimensional '2D' and three-dimensional '3D' Hollywood feature films for exhibition on such systems around the world.

Analyst upgrades:

• Citigroup upgraded Procter & Gamble (NYSE:PG) to Buy from Hold after meeting with management as it believes a more aggressive strategy will lead to the company regaining market share. Citi raised its target on shares to $66 from $54.
  
• Piper Jaffray upgraded Allscripts (NASDAQ:MDRX) to Overweight from Neutral after learning the company signed a large contract with North Shore Long Island Jewish Hospital. Piper now sees upside to estimates and raised its target on shares to $22.50 from $14.
  
• UBS upgraded Amedisys (NASDAQ:AMED) to Buy from Neutral following a review of the Senate Finance Committee's healthcare proposal, which they view as "benign." The firm raised its target to $57 from $46.
• Daimler (NYSE:DAI) was upgraded to Outperform from Market Perform at Bernstein.
  
• Boston Private (NASDAQ:BPFH) was upgraded to Outperform from Market Perform at Keefe Bruyette.
  
• E-Trade (NASDAQ:ETFC) was upgraded to Buy from Neutral at Goldman.

Disney (NYSE: DIS) did its best to act like a good corporate citizen when it released a "green" film on Earth Day. The title? Appropriately, it's Earth. I didn't see the movie, I'm sure it was decent enough.

Over the three-day weekend, Boxofficemojo says that Earth grossed $8.5 million as of early estimates. If you include the Wednesday and Thursday showings, Earth has so far banked about $14 million for itself.

In terms of ranking, though, that $8.5 million statistic places the project in fifth place, behind such multiplex entries as Sony's (NYSE: SNE) thriller Obsessed, starring Beyonce, Time Warner's (NYSE: TWX) 17 Again, and Viacom's (NYSE: VIA) The Soloist.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Aeropostale Inc. (NYSE: ARO) reported strong Q4 numbers as same-store sales increased.
• American Eagle Outfitters Inc. (NYSE: AEO) same-store sales fell in Q4 but earnings met expectations.
• ArcSight Inc. (NASDAQ: ARST) continued its growth in Q3 and it forecast continued growth.
• Buckle Inc. (NYSE: BKE) posted a better-than-expected Q4 profit and continued same-store sales growth.
• Citigroup Inc. (NYSE: C) CEO said in a memo that it earned a profit in the first two months of this quarter.
• Dick's Sporting Goods Inc. (NYSE: DKS) beat Q4 earnings estimates but same-store sales fell.

IMAX (NASDAQ: IMAX), the famous theater with huge screens and snazzy 3D technology, reported earnings for the fourth quarter on Thursday. On a GAAP basis, IMAX lost $0.21 per share this quarter compared to $0.25 per share in the year-ago period. On an adjusted basis, the loss was $0.11 per share this year versus a loss of $0.21 per share last year. So, no matter how you slice it, IMAX narrowed the red ink.

After testifying before a Senate committee about AIG (NYSE: AIG) last week, the Fed's Ben Bernanke participates in a Council of Foreign Relations event Monday evening.

Economic data due to be released this week include wholesale trade and job vacancies for January on Tuesday morning, the U.S. Treasury budget for February on Wednesday, retail sales for February and business inventories for January on Thursday morning, and the U.S. trade balance for January on Friday morning.

This was a big weekend for me. Jonas Brothers: The 3D Concert Experience was released in over 1,200 theaters. No, I had no plans to see the movie at my local IMAX (NASDAQ: IMAX) auditorium. The reason I was so excited is because I own shares of Disney (NYSE: DIS). And I was praying that the film would firmly cement the Jonas Brothers in the collective consciousness of tweens across the globe.

Unfortunately, that didn't happen. In fact, the Jonas movie failed at the domestic box office. Don't even try to spin it. According to Boxofficemojo, the film came in second place with a little under $13 million (keep in mind I am working off estimates, final figures will be released later). Lions Gate Entertainment's (NYSE: LGF) latest Tyler Perry project, Madea Goes to Jail, was number one again for the second week in a row, grossing about $16 million. This is really, really disappointing.

I had high hopes for News Corp.'s (NYSE: NWS) remake of one of my favorite sci-fi films from the 50s, The Day the Earth Stood Still. I'm not sure what everyone else was thinking, but I figured the film would take in at least $50 million at the opening weekend.

Unfortunately, according to early estimates at Boxofficemojo, Earth could only scare up around $31 million in its first three days at domestic theaters. In fact, compared to last year's I Am Legend from Time Warner (NYSE: TWX), which came out at about the same time, and was another remake of a famous cult sci-fi flick as well, it performed poorly as Legend, starring Will Smith, grossed $77 million in its debut weekend.

Keanu Reeves starred as the alien Klaatu in Earth. One has to wonder how the box-office dynamic would have changed if Will Smith was in the role. Of course, maybe the movie would have been more expensive to make (although I'm sure Reeves doesn't come cheap, either). I heard great word on the remake from a friend of mine who saw it over the weekend on an IMAX (NASDAQ: IMAX) screen and really enjoyed it. He was a bit surprised when I suggested that the film only pulled in around $30 million.

For movie lovers, one of the things that matters almost as much as a movie story line, is the picture and sound quality. Up until recently, there was little question as to where you needed to go to get the best video possible for a movie -- your nearest Imax theater. But recently, Imax has been under pressure from advancements in 3D systems and digital projection.

What Imax really needs is to get as many big name blockbuster productions as possible into its lineup. The company, which currently has 320 theaters, got some good news today: Walt Disney (NYSE: DIS) will release five new movies in Imax format.

The first of the five new Disney Imax movies will feature one of the industry's largest stars, Jim Carrey. He will play in an Imax production of "A Christmas Carol," which will be directed by Robert Zemeckis, the director of the highly successful "Polar Express" back in 2004, and be released late next year.

Dark Knight, the Batman movie starring Heath Ledger, did boffo box office: $158.3 million, according to Defamer. But this blockbuster will not just benefit Warner Brothers and DC Comics, which share parent Time Warner Inc. (NYSE: TWX) with BloggingStocks. There are at least six companies that will benefit from Dark Knight's success. According to Seeking Alpha, these companies include:

• Time Warner -- through its Warner Brothers and DC Comics subsidiaries are profiting most directly.
• Comcast Corporation (NYSE: CMCSA) partnered with Warner Bros. to offer "behind-the-scenes footage, trailers, and mini movies on demand"
• Verizon Communications, Inc. (NYSE: VZ) and Nokia Corporation (NYSE: NOK) collaborated in creating the Nokia6205 The Dark Knight Edition. Seeking Alpha reports that "This batphone targets superfans, with bat wallpaper, voice tones, screensavers, and the film's trailer pre-loaded."

There will be five superheroes competing for the attention of weekend moviegoers come Friday. There's Marvel Entertainment Inc. (NYSE: MVL)'s duo Iron Man and The Incredible Hulk, Sony Corporation (NYSE: SNE)'s Hancock, General Electric Corporation (NYSE: GE)'s Hellboy (distributed by GE's Universal), and Time Warner, Inc (NYSE: TWX)'s Dark Knight. So, who's going to be the ultimate crime fighter?

I'll tell you which one prevails: Time Warner and its new Batman film, The Dark Knight, has the weekend all locked up. This is set in stone. The Hulk and Iron Man are pretty much done, Hellboy isn't a powerful enough brand name, and Hancock didn't deliver the big numbers I thought it was capable of during its debut weekend (since then, however, the movie has held up well, I have to admit). But you can bet that Dark Knight hits $100 million this weekend. Can you feel the buzz surrounding this blockbuster in the wings? I can. Several reviews I've read were full of cinematic worship for this new entry in the franchise, with special praise reserved for the late Heath Ledger and his portrayal of the fiendish nightmare known as The Joker. There's a decent marketing campaign behind the project, including promotion of the availability of IMAX (NASDAQ: IMAX) screenings. If there ever seemed a movie fit for Imax, this is it. Yeah, Dark Knight can't lose, it can only win big.

Of course, what about Time Warner's stock? It could certainly use a superhero right now, as it has been hovering in recent times not above Gotham City (although that would probably be treacherous enough) but above 52-week-low City. I can't say that a big opening weekend definitely won't move the stock a little just due to the excitement factor, but I wouldn't buy the company ahead of the film (I also wouldn't gamble with IMAX either). Time Warner simply is too large to be affected significantly by one movie. If you consider Time Warner at all, it would be for fundamentals and valuation (I think the company is cheap here, although with this market, I'd rather get it cheaper). Enjoy the movie first, think about the stock later...

Disclosure: I own GE and Marvel; positions can change at any time.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• AnnTaylor Stores Corp. (NYSE: ANN) sees Q1 profits beating estimates but reaffirmed the full-year outlook.
• Blockbuster Inc. (NYSE: BBI) beat Q1 earnings expectations but fell short of revenue estimates.
• Electronic Arts Inc. (NASDAQ: ERTS) posted strong Q4 and full-year results on titles such as Rock Band.
• Fossil Inc. (NASDAQ: FOSL) forecast Q1 earnings just a penny below analysts' estimates.
• IMAX Corp. (NASDAQ: IMAX) doubled its Q1 loss and missed Wall Street's expectations.
• JC Penney Co. Inc. (NYSE: JCP) profits fell 50%, and it predicted trouble would continue through the year.
• Kohl's Corp. (NYSE: KSS) posted a smaller-than-estimated Q1 profit decline and cut its full-year outlook.
• Liz Claiborne Inc. (NYSE: LIZ) swung to a Q1 loss on restructuring but beat analysts' expectations.
• Lumber Liquidators Inc. (NYSE: LL) posted strong Q1 results despite the housing slump.
• Macy's (NYSE: M) beat low Q1 expectations despite weak same-store sales.
• Nissan Motor Corp. (NASDAQ: NSANY) Q4 profit surged but it warned of lower profits this year.
• Nordstrom Inc. (NYSE: JWN) posted smaller-than-estimated Q1 profit decline and cut its full-year outlook.
• Priceline.com Inc. (NASDAQ: PCLN) beat Q1 expectations due to increased bookings.
• Sirius Satellite Radio Inc. (NASDAQ: SIRI) posted a narrower Q1 loss in line with expectations.
• Sony Corp. (NYSE: SNE) swung to a Q4 profit but fell short of Wall Street estimates.
• Sprint Nextel Corp. (NYSE: S) beat low Q1 estimates as its loss widened on charges and lost subscribers.
• Tiffany & Co. (NYSE: TIF) projected beating Q1 earnings forecasts and raised its dividend.
• Wal-Mart Stores Inc. (NYSE: WMT) posted Q1 profits up on international growth and bargain shoppers.
• Whole Foods Market Inc. (NASDAQ: WFMI) Q2 profits fell due to the Wild Oats acquistion.
• XM Satellite Radio (NASDAQ: XMSR) reported a bigger-than-expected Q1 loss and a surge in subscribers.

IMAX (NASDAQ: IMAX) really missed Wall Street's expectations. In its latest earnings release, issued on Monday, the company said that its net loss per share doubled to $0.25 for the first quarter compared to the 2007 quarter when the net loss was $0.12 per share. Revenues were $23.5 million, a 12% decline.

While that performance is bad enough in itself, it was also below expectations with the bottom line missing by $0.11. Yikes! Revenues were likewise a disappointment. Even with all the snazzy content from studios such as Time Warner (NYSE: TWX), Viacom (NYSE: VIA), Disney (NYSE: DIS) and DreamWorks Animation (NYSE: DWA), IMAX is having a tough time getting its stock out of the single digits. Management is hoping that a stronger slate for the rest of the year will have a positive impact.

Maybe it will, maybe it won't. IMAX is a stock I have no interest in buying. The company sports a negative book value at the moment, and the stock's past performance has been pretty terrible. I have to concede, however, that on a shorter-term period, the stock has been strong -- in fact, it is not too far from a 52-week high.

As one can imagine, many are speculating that IMAX has a great future ahead of it as the company transitions to digital platforms (this article at USATODAY.com provides an excellent summary of the bull argument, as well as issues IMAX has had with financing). Also, I'm sure many are speculating about a potential sale of the company at some point.

Hey, I'm not going to necessarily rain on the long-term thesis for IMAX, but I have to be honest and say that I'd have to see a breakout from here and some better numbers next quarter to even think about starting a position.

Disclosure: I own shares in Disney; positions can change at any time.