Be sure to download the March Madness On Demand App through Itunes. If you buy a lot of apps through iTunes, you can get 4% back when you purchase through BargainMatch. If you need last minute help on your bracket, TeamRankings can help. PhogBlogger and budding guru David Hess works over there, and has several suggested brackets based on the size of your pool. They beat 99.6% of America last year, which means they probably beat you :).
Here's the link: Team Rankings