My little bother is a hard-core Rock Band gamer. He's a drummer with a percussion performance degree from Rutgers. He is currently #3 in the world on Expert drums in the game. He also currently holds the #1 score for the Perfect Drug - which apparently, according to all of the Rock Band forums is the 2nd hardest song available (behind the Who song "Won't Get Fooled Again").
That was in late February, so he might not still be #3 in the world, but that doesn't diminish his Perfect Drug abilities. So, without any further delay, enjoy the split-screen Rock Band action: