Now, here is a cool idea - especially when our local school, University of Memphis, is ranked in the top 10.  I can see where this DNN4 module would be popular among college basketball fans.  The module has an interesting UI.  And you can't beat that price either.

NCAA Tourney 1.0 by Module Masters.  $29.95.  The NCAA Tourney module allows you to add a NCAA tournament pool to your portal. You can allow users to record their picks for the tournament and then manage the outcome of the tournament calculating the winner of your tourney based on customizable point system.