New York and Philadelphia have some of the most hardcore fans in Major League Baseball. These fans don't just get excited about a game as big as the World Series, they get stressed out.

And stress isn't good for anyone's health, and neither are the hot dogs New York fans will gorge themselves on, or the cheese steaks the Philadelphia fans will wolf down. Plus, fans in both cities are going to be washing that heart-attack-waiting-to-happen chow down with too much beer. No doubt many of them will be suffering from sleep apnea.

Baseball fans worldwide continue to warm themselves around the glow of the television to watch the Phillies and Yankees battle it out in the World Series.

Well, sports fans, I know you're psyched, but I have something just as exciting for you: six home run trades.

Peter Lynch had his "take a walk down Main Street" style of investing, so let's call this the "take me out to the ball game" approach to trading. I'm going to give you six trades that I think will knock it out of the park.

Analyst upgrades:

• Deutsche Bank upgraded ConocoPhillips (NYSE: COP) to Buy from Hold on expectations that oil supply will begin to tighten and demand rise. The firm has a $55 price target on the stock.
• Citigroup upgraded Pinnacle West (NYSE: PNW) to Buy from Hold and added the stock to its Top Picks Live list. The firm expects the company's settlement in Arizona to be approved and raised its target on shares to $35 from $32.
• RBC Capital upgraded NetApp (NASDAQ: NTAP) to Outperform from Sector Perform as it believes that the company is performing better than expected during its October quarter. The firm expects the company to continue to execute well during subsequent quarters and it raised its target to $33.
• Wells Fargo (NYSE: WFC) was upgraded to Buy from Neutral at Goldman.
• PetSmart (NASDAQ: PETM) was upgraded to Buy from Neutral at Janney Montgomery.
• General Dynamics (NYSE: GD) was upgraded to Overweight from Equal Weight at Morgan Stanley.

Analyst upgrades:

• Jefferies upgraded NeuStar (NYSE:NSR) to Hold from Underperform on valuation following the recent weakness and raised their target price to $15 from $12.
  
• Oppenheimer upgraded Adobe Systems (NASDAQ:ADBE) to Outperform from Perform on valuation as they believe the recent pullback has created an attractive entry point into the name. The firm has a $27 target on the stock.
  
• UBS upgraded Pfizer (NYSE:PFE) and Wyeth (NYSE:WYE) to Buy from Neutral based on valuations. Pfizer's price target remains $18 and Wyeth's was raised to $50 from $38.
• Methanex (NASDAQ:MEOH) was upgraded to Sector Outperformer from Sector Performer at CIBC.
  
• BHP Billiton (NYSE:BHP) was raised to Buy from Hold at RBS.
  
• Anadys Pharma (NASDAQ:ANDS) was upgraded to Buy from Neutral at Piper Jaffray.

Analyst upgrades:

• UBS upgraded Pacific Sunwear (NASDAQ: PSUN) to Neutral from Sell and said liquidity is no longer a near-term concern. The firm lowered Pacific Sunwear's target to $1.50 from $3. Citigroup upgraded shares to Hold from Sell on valuation following the recent weakness and believes Pacific Sunwear has sufficient liquidity to remain a going concern.
  
• Calyon believes Reliant Energy (NYSE: RRI) will be successful in unwinding the Merrill Lynch Retail credit sleeve and obtaining alternative collateral. The firm upgraded shares to Buy from Add.
  
• JP Morgan said Cogent's (NASDAQ: COGT) position in homeland security and the defense markets make it less sensitive to an economic downturn, making valuation attractive. JP Morgan upgraded shares to Overweight from Neutral and raised its target to $13 from $10.50.
• Goldman added Research in Motion (NASDAQ: RIMM) to its Conviction Buy List and removed Riverbed (NASDAQ: RVBD) from the Conviction Sell List.
  
• J.M. Smucker (NYSE: SJM) was raised to Buy from Underperform at Merrill Lynch.

TheStreet.com's Jim Cramer says the exchange rate plus massive undervaluations make the great brands prime targets.

There's always been a groupthink in Europe about currencies. The companies that want to buy American companies have, at times, seemed to care more about the currency, or at least not buying a company in a country whose currency is in decline, than they care about the actual target.

That's what it looks like now that a large German company and now a large Italian company have decided to start splurging. It is no coincidence that Deutsche Tel (NYSE: DT) (Cramer's Take) and Finmeccanica are exploring Sprint (NYSE: S) (Cramer's Take) and DRS (NYSE: DRS) (Cramer's Take). These companies are selling for something like 40% off for those bearing euros, and neither potential acquirer has debt problems or subprime issues, so the deals don't have big borrowing problems.

That's what I am thinking about when I see the better-than-expected figures today from Unilever (NYSE: UL) (Cramer's Take) and the other day from Nestle. These companies are part of that same groupthink. They are looking, no doubt, at a Heinz (NYSE: HNZ) (Cramer's Take) and thinking, "Wait, that's about a $10 billion company that's a global leader."

MOST NOTEWORTHY: Intel Corp (INTC), Advanced Micro Devices, Inc (AMD), Post Properties, Inc (PPS), Analogic Corp (ALOG) and the base metals sector were today's more noteworthy upgrades:

• DA Davidson raised Intel Corp's (NASDAQ: INTC) rating to Buy from Neutral based on market share gains and unexpected PC growth.

• American Technology upgraded Advanced Micro Devices Inc (NYSE: AMD) to Buy from Neutral as the firm expects shares to trade higher near-term with data not likely to get worse over the next six months. The firm suspects AMD could win a notebook platform at Toshiba Corp (TOSBF) and expects further offerings at Dell Inc (DELL).

• Banc of America upgraded shares of Post Properties Inc (NYSE: PPS) to Neutral from Sell and raised their target to $53 from $42 after REIT Wrap, a real estate industry newsletter, reported the company may have already received several unsolicited bids.

• Stanford upgraded Analogic Corp (NASDAQ: ALOG) to Buy from Hold based on improving fundamentals in the security and medical businesses.

• Goldman upgraded the base metals sector to Attractive from Neutral as the firm believes above-consensus metal prices for 2008-2009 are sustainable. The firm favors copper fundamentals over nickel, zinc and aluminum and views Freeport-McMoRan Copper & Gold Inc (FCX) as its top pick.

OTHER UPGRADES:

• Lehman upgraded Alon USA Energy, Inc (NYSE: ALJ) to Equal Weight from Underweight.

• Bear Stearns upgraded Shanda Interactive Entertainment Ltd (NASDAQ: SNDA) to Outperform from Peer Perform.

• Wesco International, Inc (NYSE: WCC) was upgraded to Strong Buy from Outperform at Raymond James.

• BMO Capital raised ResMed Inc (NYSE: RMD) to Outperform from Peer Perform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).