If Stanford can get over Oregon then I could see them going undefeated too. Also a reasonable chance of one of OU, Ok State or Texas running the board with no conference championship game to trip them up. But I'm a total rookie so my opinion ain't worth alot.
Either Bama or LSU vs Wisconsin in the Sugar Bowl. The Badgers are for real and will be the favorite in every remaining game they have up to and including the Big 10 title game, which I think will be a rematch with Nebraska. Sparty will give em a game at home, but the Badgers roll in the 2nd half. OSU is a mess, and Illinois isn't as good as their record suggests.