By Abby West
November 14, 2010 at 02:09 PM EST

If you were sitting around hoping for broader humor on Nickelodeon’s iCarly, the wait is over. Funnyman Jack black reunites with his School of Rock co-star Miranda Cosgrove in the Nov. 19 episode,  “iStart a Fan War.” Black plays Spencer’s (Jerry Trainor) online rival, Aspartamay. The two meet up and “battle” at WebiCon when they both show up dressed as avatars from their favorite medieval-themed video game.

“Jack Black is one of the funniest people I know, and it was wonderful working with him again,” said Cosgrove.

Watch a clip of the epic battle after the jump.

Carly and the gang have their own troubles as fans clamor to find out if Freddie’s dating either Carly or Sam, but in this clip it’s Black’s Aspartamay who (kind of) poses the the problem for Carly.