User blog:Redvelvetcupcakelove/jack black to guest star on icarly~!

Jack Black has signed on to guest-star in an episode of Nickelodeon’s kiddie phenom, sources confirm exclusively.

Black—who twice hosted Nickelodeon’s Kids’ Choice Awards (in 2006 and 2008)—will play Spencer’s (Jerry Trainor) videogame nemesis, Aspartamay. The rivals come face-to-face at the show’s version of Comic-Con, Webicon.

The episode goes before the cameras this week and is slated to air later this season.

--i got this from the entertainment weekly website.