Did I just see David Letterman sitting on a couch with Oprah Winfrey AND Jay Leno? Easily the biggest surprise among the much anticipated Super Bowl ads: http://www.youtube.com/watch?v=UcEx767TIas

USA Today tells us how it all came to be: http://www.usatoday.com/life/television/news/2010-02-07-leno-lettterman-oprah_N.htm

Other favorites:
Dr. Pepper - Mini KISS http://www.youtube.com/watch?v=2tuS7Yap0KY
Snickers - Betty White http://www.youtube.com/watch?v=k3rsaneyeXY
TruTV - Punxsutawney Polamalu http://www.youtube.com/watch?v=MFzIdZbypNk