According to a post I read on Wired, Danny will be judging at a Drum-Off at Guitar Center (in LA?) on the 10th of January 2009:
including Foo Fighters’ Taylor Hawkins, Tool’s Danny Carey, No Doubt’s Adrian Young, Avenged Sevenfold’s The Rev and session vet Kenny Aronoff. Those distinguished musicians will be joined by celebration host and Jane’s Addiction slammer Stephen Perkins, The Mars Volta’s Thomas Pidgeon, Shadows Fall’s Jason Bittner, and Papa Roach, which performs a headliner set.
Sounds like fun!