My wife suggested that we Tivo it so we could fast-forward the game and just watch the commercials.

There'd really be no point in wasting hours of recording time on Tivo and then searching for the commercials when you can find them all on-line. I found them at: http://www.youtube.com/superbowl. CBS links to them here: http://www.cbs.sportsline.com/nfl/postseason/superads but that page looks pretty broken in firefox.