Eh, the MWC is less of an underdog than most might think. Utah is pretty damn good...Bogut is always in the talks for "player of the year". UNM is pretty good too. Granger put on a nice show last night against BYU(23 pts, 8 rebs, 5 ast). I expect them to be in the tourney. And Air Force always plays tough too.
You want an underdog to cheer for? Wait until the seeds come out, and pick one of the #12 seeds to upset in the first round.