The espn scorecenter and the yahoo sportstacular apps are great. There's also a UT app that has scores/schedules/news for all the Longhorn teams, plus a lot of cool stuff about The University.
You can add subcategories for sports you follow: NCAA football, NBA, NFL. etc. In addition, you can add a "myteams" section which just displays the teams you follow in all sports.
For example, for the one i customized, it displays Spurs, Texas Football, Texas Basketball, Astros and USA soccer scores all on one nifty page.
You can also set it up to alert you when games have started, (ie: when Missouri/Texas tipped off) and when they have become final.