Personally, out of the announced songs, it's One Armed Scissor, by At the Drive-In. Favorite band, one of their best songs... EPIC. I have a feeling it'll be pretty far down the list, it gets crazy. I'm gonna master it on all guitars, drums, and I think I can already do the vocals on Expert, because I can sing like that as it is really well.
I'll be as crazy as the band when I play this song.