Most of the companies who shell out $3m for a Super Bowl 2009 commercial keep it a secret or at least do not talk lightly about what the ad will be like. There are exceptions, like GoDaddy which already shows their Super Bowl 2009 Ad online.
SpotBowl created a Super Bowl 2009 Commercial Line-up that includes all tidbits that have been revealed officially by companies and also some inside scoops.
Their Super Bowl Line-Up includes 49 spots. If you do not want to spoil the surprise than do not look at this list as it contains descriptions of what most likely the different Super Bowl ads will be about.
More details on SpotBowl. Update: See also this detailed Super Bowl Ad Schedule.

Super Bowl 2009 will be happening on Sunday February 1st. This Super Bowl is a treat for geeks that is why we will cover it even more than in 2008. Despite the recession a 30 second Super Bowl Ad costs about $3m and there should be lots of must see Commercials again. There will be for instance the first 3D Super Bowl Ads and lots of Super Bowl Ads featuring new 2009 Sci-fi Movies including the new Star Trek and the next Transformers movie. So make sure you have your Super Bowl sized LCD HDTV and NFL Gear ready.