Outside of Wyoming, I root for Arizona (since I live/work in Tucson), and Minnesota (since I grew up there). It's been a rough couple of seasons for Minnesota, ever since Glen Mason and his dual-HB system left. Hopefully the Northern Illinois guy can get things turned back around. Their new outdoor stadium is pretty sweet.
The only other team I really root for, is whomever is playing Notre Dame! Growing up in Big 10 country, it always pissed me off that the only games I could get on a Saturday were the Notre Dame games, as with no cable, NBC was one of the few channels I was able to watch. It always frustrated me that they could hand-pick their schedule, and then get a free BCS bowl game at the end of the season if they picked right. I'm 100% in the group that says they need to be forced into a conference and play a real schedule each season, if they want a shot at the BCS.