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

• CBS Corp. (NYSE: CBS) reported that Q3 revenue was flat while earnings and cash flow declined.
• Clorox Co. (NYSE: CLX) reported better-than-expected Q1 earnings, helped by healthy gross margins.
• Comcast Corp. (NASDAQ: CMCSA) posted better-than-expected Q3 earnings with modest revenue growth.
• Dean Foods Co. (NYSE: DF) Q3 revenue missed estimates but earnings came in better than expected.
• Expeditors International of Washington Inc. (NASDAQ: EXPD) traded lower after its Q3 earnings miss.
• Garmin Ltd. (NASDAQ: GRMN) beat earnings estimates in the week after the Google Navigation launch.

Yesterday it was announced very loudly that "my pal Warren" was going to acquire the 77.4% of the Burlington Northern Santa Fe (NYSE: BNI) railroad, that Berkshire Hathaway (BRK.A) does not already own, for $100 per share, offering about a $24 premium to Mondays closing price.

Talk about putting your money where your mouth is -- yikes! Buffett has gone all in, betting the economy is healing, and silencing anyone that questioned his integrity or motives for cautious optimism saying it was all talk!

Analyst upgrades:

• Oppenheimer upgraded Viacom (NYSE: VIA, VIA.B) to Outperform from Perform following the better-than-expected Q3 results to reflect an improving outlook for all the company's segments. The firm raised its target on shares to $36.
• Deutsche Bank upgraded C.R. Bard (NYSE: BCR) to Buy from Hold on expectations the company's underlying growth trends will improve. The firm raised its target on shares to $88 from $78.
• Wells Fargo upgraded Cognizant (NASDAQ: CTSH) to Outperform from Market Perform. The firm upgraded the stock after Cognizant reported better-than-expected Q3 results.
• Plug Power (NASDAQ: PLUG) was upgraded to Sector Perform from Underperform at RBC Capital.
• Digital River (NASDAQ: DRIV) was upgraded to Buy from Hold at Collins Stewart and to Overweight from Neutral at Piper Jaffray.
• Steris (NYSE: STE) was upgraded to Overweight from Equal Weight at Stephens.

The housing bubble and subsequent "Great Recession" have tarnished the stars of a good many of the world's financial wizards, such as the former heads at Lehman Bros. and Merrill Lynch. But one respected image remains -- perhaps unsurprisingly -- on top: Warren Buffett, chairman and CEO at Berkshire Hathaway Inc. (NYSE: BRK.A).

That's according to a recent quarterly poll of investors, traders, and analysts who subscribe to Bloomberg terminals, those somewhat cryptic news and data computers that are ubiquitous on Wall Street. Buffett, who received favorable nods from 25% of those participating in the poll, walked away with a plurality of the vote, Bloomberg News reported.

No high-priced stock list would be complete without the best known high-priced stock out there -- Warren Buffett's Berkshire Hathaway A Shares (NYSE: BRK.A).

At over $100,000 per share, this is, by far, the most-expensive, most well-known stock on our list. With an investment in Berkshire Hathaway, you are putting your money on the success of one of the greatest investment minds the world has ever known.

Sure, a hundred grand is a lot for one share of stock, but if you want to get your money alongside one of the best track records in modern investment history, that's what you have to pay.

As many shoppers have realized in this recession, just because something is cheap doesn't mean it's a bargain.

This is especially true in the stock market, where you definitely get what you pay for.

There have been plenty of low-priced deals on stocks lately, as plenty of good companies watched their shares take a beating in our economic crisis. But that doesn't mean all cheap stocks are worth buying. Unless that bargain goes up in value, it's not a bargain.

So, you think you had a rough year? Check out what happened to Warren Buffett, who is ranked the second-richest man in America despite a drop of $10 billion in his personal wealth during the past year. The culprit for Buffet's loss is the 20% decline in Berkshire Hathaway (NYSE: BRK.A) stock during the past 12 months.

As noted, the Oracle of Omaha maintained his second-place ranking on the list of the richest Americans. The first-place finisher is Bill Gates, who the article notes is "Buffett's friend and bridge partner." What a game of bridge that must be (I am not familiar with the game, but if there is betting involved I don't want to be sitting at that table). Gates maintained his top spot although he lost $7 billion.

If you are not reading the commentary we receive then you are missing some gems. One of our regulars reminded me of something "my pal Warren" said: "... find companies which can be run by idiots because sooner or later an idiot will be running it."

In Buffett's case he can actually call them up and talk to them. In many cases, he could probably get them to resign. For most of us, all we know is basic things like how's the stock price or has the idiot been indicted?

Back in the 18th century, Baron Rothschild (a member of the bank dynasty) said, "The time to buy is when there's blood in the streets." On its face, the advice makes sense. But, when it comes to actually doing it, most investors freeze up.

However, in the case of Warren Buffett, he had the guts to make some big bets when the financial system was in free-fall. In October, his firm, Berkshire Hathaway (NYSE: BRK.A), shelled out $5 billion to buy 50,000 shares of cumulative perpetual preferred stock of Goldman Sachs (NYSE: GS). The shares came with a 10% annual dividend. Oh, and Goldman also granted a warrant to buy 43,478,260 shares of common stock at $115 a each.

Despite us being on the heels of the big Russell indexes changing and despite the quarter-end being a day away, this was a boring day. A study showed a small decrease in online job advertisements, but that was the only item on the economic front. Oil traded higher and bond yields came down as traders are voting for more stability the rest of the year there.

Here are today's unofficial closing bell levels:

Dow 8,531.19 +92.80 (1.10%)
S&P 500 927.18 +8.28 (0.90%)
Nasdaq 1,843.34 +5.12 (0.28%)

Top Analyst Calls

Talk of "green shoots" abounds with the S&P 500 up 40% from its lows in March 2009, but Goldman Sachs (NYSE: GS) CEO Lloyd Blankfein remains cautious in his outlook for the global economy. "I think it's going to be a long, protracted recession," he said while speaking on a panel at the annual International Organization of Securities Commissions (IOSCO) conference in Tel Aviv.

Blankfein also emphasized the importance of intelligent regulation and risk management, warning fellow finance executives not to discount the latter. "The culture of risk management is very important and hard to legislate, but at the end of the day, you have to make sure that the people on the risk management side of your operation are just as capable, and maybe therefore, just as well-paid and have the career opportunities as people on the producing side of the business."

Long-term growth stock expert Alexander Green sees long-term upside potential for conservative investors willing to invest along side of Warren Buffett.

Here, the investment director of The Oxford Club reviews Berkshire Hathaway (NYSE: BRK.B), a holding in his model portfolio.

"The market surprised investors with the magnitude of its drop over the last year and a half. Then it surprised them again with a furious rally that began in early March.

"What lies just ahead? No one knows for sure, of course. But we do know several investments that are attractively priced at current levels, such as Berkshire Hathaway (BRK.B), a conservative choice, run by investment great Warren Buffett.

This is a follow-up on the short term results comparing the Williams Companies Inc. (NYSE: WMB) to Apple Inc. (NASDAQ: AAPL), Google Inc. (NASDAQ: GOOG) , Microsoft Corp. (NASDAQ: MSFT), and Berkshire Hathaway Inc. (NYSE: BRK.B).

I wrote a series of stories about why I thought WMB would outperform the other more popular stocks and two weeks is not much of a test unless you have been trading on my suggestions instead of investing.

The final post was Serious Money: Better than Apple, Google, Microsoft & Berkshire Hathaway, Part 5 if anyone cares to go back and review that.

Along with the May flowers, the coming week will bring plenty more disappointing earnings reports. Analysts surveyed by Thomson Reuters anticipate that Archer Daniels Midland Co. (NYSE: ADM), CBS Corp. (NYSE: CBS), Cisco Systems Inc. (NASDAQ: CSCO), CVS Caremark Corp. (NYSE: CVS), Kraft Foods Inc. (NYSE: KFT), and Walt Disney Co. (NYSE: DIS) will all post lower earnings for the most recent quarter. American International Group Inc. (NYSE: AIG) and Sprint Nextel Corp. (NYSE: S) are expected to report losses.

But which companies are doing well? Here are a few reporting this week that analysts are optimistic about.

This is the final post on why I believe you would be better off investing in the Williams Companies Inc. (NYSE: WMB) than you would in Apple Inc. (NASDAQ: AAPL), Google Inc. (NASDAQ: GOOG) , Microsoft Corp. (NASDAQ: MSFT), or Berkshire Hathaway Inc. (NYSE: BRK.B).

I hope I made the case this week outlining the deeper value proposition, competitive advantages, reduced risk, and of course the dividend that make Williams the preferable investment for the long term.