Activision announced today that Brett Michaels will be making an appearance in
Guitar Hero III. Fresh off his own crappy reality TV show, the Poison lead singer will be mo-capped into the game as well as providing a new/original song for the game.
At E3 Activision mentioned that they would have three main guitar bosses in the game with two of them being real life guitar players. Slash has already been revealed as one of the bosses but I'm not sure if Brett Michaels is that second boss (he's a singer not a guitar player) or if they still have something up their sleeves.