Mine are Six, The Light that Blinds, Trogdor, and Arterial Black.
There are more, but those are my favs. I think they should put another All That Remains songs on the next Guitar Hero. they are an awesome band. I was thrilled when I found out Six was on GHII.
Yeah, I get the same reaction when I play Less Talk More Rokk, cuz I know I can beat it on expert, but I keep messing up.
I like Hangar 18 also, but I just can't beat it on expert. It makes me want to break my guitar controller.... then the game....