FOX is planning some extra-special stuff for May sweeps, that wonderful season when ratings matter more than ever. The network has always booked the American Idol finale during May, but this year AI’s popularity seems to be cooling a bit. In case sharing the Glee time block isn’t enough to bring the reality series back up to its number 1 ratings spot, another FOX series will get getting an Idol tie-in.

That’s right: the regular Idol cast will be appearing on The Simpsons season finale. Simon Cowell, Ellen DeGeneres, Kara DioGuardi, Randy Jackson and Ryan Seacrest will lend their likenesses and voice talent to the episode, which will air on May 23. Gossip says the tie-in involves bartender Moe, who will receive an invite to judge on the reality series.