If you're a big fan of the CBS drama 'Numb3rs,' stick your fingers in your ears and run around the room yelling "LA LA LA LA LA I'M NOT LISTENING TO YOU."

Michael Ausiello over at Entertainment Weekly says that 'Numb3rs' star David Krumholtz has been cast in the new FOX Ron Howard sitcom about an IRS agent. The show doesn't have a title yet, it's just called 'Untitled Ron Howard IRS Pilot,' which I think would be a funny title for the show (very 'Arrested Development'-like). "Tonight after 'American Idol,' an all-new 'Untitled Ron Howard IRS Show'!"

If there's any good news about this for 'Numb3rs' fans it's this: if 'Numb3rs' is renewed for another season, Krumholtz has to continue with that show. He gets the Ron Howard show only if 'Numb3rs' doesn't come back for a seventh season. And it doesn't really seem like that show is coming back next fall (though everyone thought that about another CBS show last year, 'Cold Case,' and that was renewed).