As an indication of the improving outlook, nine deals with a total value of $19.9 billion were announced from the start of December through Christmas Eve. That came on top of November's 14 M&A announcements, which were valued at $63.175 billion - although that number was distorted somewhat by Warren Buffett's $26.52 billion bid for the 78% of Burlington Northern Santa Fe Corp. (NYSE: BNI) he didn't already own.

By contrast, archives of merger-tracking Web site The Online Investor, show 15 deals involving publicly traded U.S. stocks in December 2008, but the total value was a meager $3.986 billion. (That's not counting the $8.8 billion merger of Japanese electronics giants Panasonic Corp. (NYSE ADR: PC) and Sanyo Electric Co. (OTC: SANYY), which brightened the global picture somewhat.) November 2008 had 14 deals valued at just $4.898 billion.