Fresh off The Simpsons’ Treehouse of Horror 20th Anniversary episode, producer Al Jean has announced a slew of guest stars set to appear over the rest of season 21.

Among other big names, fans of the iconic sitcom can look forward to appearances by:

• Neve Campbell
• Jonah Hill
• Sacha Baron Cohen
• Eddie Izzard
• Chris Martin

Said Jean, to TV Guide Magazine, of Hill's guest-starring role:

“Jonah appears in an episode about a kid who’s the Bart Simpson of the elementary school ten years ago. Now he lives with his mother, he’s really pathetic and he’s still playing pranks."

As you look forward to this episode and these cameos, catch up on your favorite The Simpsons quotes now!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.