Are you a Rock Band junkie?

I found this video of a band of 4 people playing "Painkiller" on Rock Band 2. All playing on Expert. All got 100%. If you're familiar with this song then you'll know that it's one of the hardest songs to play on this game. It's really amazing to watch. I am only now just beginning to be able to complete some songs on Expert level on the guitar. I totally suck on the drums and can't play past Medium level, and can beat about half the songs on Vocals on Expert. If you are not familiar with the levels, they are Easy, Medium, Hard and Expert.