Yonder Mtn. just doesn't seem like a late night band but I love them so I will give them the benefit of the doubt. I would rather see tND friday and lotus again on thursday These bands are similar and head to head I think tND is the better of the two.
But don't overlook Garage a Trois they could be the suprise of the weekend, and bassnecter = womp womp wobble wobble get your glowsticks ready, he's always a crowd pleaser
I just got to get over how awsome UM was last year and open myself up to the opportunity for someone else to do as well as they did (I still think it will be tough to top Moe and UM late night though, that could have been 1 for the ages)