Awesome freaking list. I had resigned myself to not seeing that many songs that I knew, but wow. They really pulled out all the stops, even with some obscure songs. Oddly enough, I was just thinking the other day how "Killing in the Name Of" would make a really good Guitar Hero song. I was hoping for Don't Fear the Reaper and anything by The Scorpions, but I'm happy with this list right here. Seeing Jane's Addiction on there made me incredibly happy, even if seeing "Heart-Shaped Box" made me want to puke up an organ.
And I saw Misirlou preformed on a video on Gamespot, which oddly enough wasn't in their video section but was instead just hanging out in the little video player off to the right. It looks insanely, insanely hard. I would have lost after less than 5%, and I would have lost my sanity after 2%.
This list is making me want this game more and more. I can't wait now.
EDIT: Wait, I lied. You can see Misirlou here.