I root for 3 teams:
The Vols as I grew up with them
MTSU (my alma mater)
Whoever plays Bama, Florida, UGA, Kentucky, Vandy, Mizzou, or USCjr. Add Michigan, OU and OSU to that list as well. When said teams play each other, I hope they are caught cheating or an epic fight of historic proportions breaks out and their entire programs are suspended from post-season play for 1 year or may be 100 hundred years, not asking for much.