When Conan O'Brien takes over for Jay Leno on NBC's "The Tonight Show" on June 1st, his first musical guest will be Seattle grunge legends Pearl Jam. According to the band's official website, they will be playing songs from their upcoming new album. The band will also reportedly be the center of a new Rock Band video game expected to be released next year. They are asking fans to log in to their website and vote for which songs will be featured in the game. In other news, there have still been no arrests in the April 27 mugging of the band's bassist, Jeff Ament.