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

• Adobe Systems Inc. (NASDAQ: ADBE) posted strong Q4 and full-year results, but with flat Q4 revenues.
• Best Buy Inc. (NYSE: BBY) beat Q3 expectations though earnings tumbled, and shares rose about 18%.
• Carnival Corp. (NYSE: CCL) announced that it had lowered its full-year earnings and revenue guidance.
• Discover Financial Services (NYSE: DFS) net income from continuing operations more than doubled in Q4.
• Eaton Corp. (NYSE: ETN) cut its Q4 earnings guidance on weakness in the American auto market.
• FedEx Corp. (NYSE: FDX) Q2 earnings topped expectations and it reaffirmed its guidance.
• General Electric Co. (NYSE: GE) declined to provide quarterly earnings guidance in its annual outlook.
• General Mills (NYSE: GIS) posted a higher-than-expected profit on cost cutting and increased marketing.
• Gilead Sciences Inc. (NASDAQ: GILD) strong earnings growth are expected by one analyst to continue.
• Goldman Sachs Group (NYSE: GS) swung to an anticipated Q4 loss and reported negative revenues.
• Healthcare Realty Trust Inc. (NYSE: HR) was downgraded due to its near-term earnings prospects.
• Honeywell International Inc. (NYSE: HON) affirmed a lower 2009 outlook and said it expects profits to fall.

MOST NOTEWORTHY: National Grid, Shire Plc, On Semiconductor and Enbridge were today's noteworthy upgrades:

• Deutsche Bank upgraded shares of National Grid (NYSE: NGG) to Buy from Hold as they believe the Keyspan deal will be positive for shareholders.
• Goldman upgraded shares of Shire Plc (NASDAQ: SHPGY) to Buy from Neutral and added the stock to their Conviction Buy List on valuation and expected gains in the ADHD market.
  
• On Semiconductor (NASDAQ: ONNN) was upgraded to Outperform from Market Perform at Wachovia on valuation.
  
• Enbridge Inc (NYSE: ENB) was raised to Sector Outperformer from Sector Performer at CIBC World Markets, as the firm sees an attractive 3-year return potential as new projects come into service and expects the stock's relative underperformance to come to an end.

OTHER UPGRADES:

• Visteon Corporation (NYSE: VC) was upgraded to Neutral from Sell at Goldman Sachs.
  
• RSC Holdings (NYSE: RRR) and Greenfield Online Inc (NASDAQ: SRVY) were upgraded to Overweight from Equal Weight at Lehman Brothers.
  
• Lockheed Martin Corporation (NYSE: LMT) was raised to Buy from Neutral at Merrill Lynch.
  
• Stifel upgraded Health Care REITs, including Healthcare Realty Trust (NYSE: HR), LTC Properties Inc (NYSE: LTC) and Ventas Inc (NYSE: VTR), to Buy from Hold.