How many Oscar winners does it take to make a season of 30 Rock? Three, apparently. Following in the footsteps of Matt Damon and Susan Sarandon, Tom Hanks has announced that he'll be appearing on the NBC comedy later this season.

Wrote Hanks on Twitter: "RadioMan delivers msg from T.Fey. Result? I'm on 30 Rock! Thanks, RMan. Hanx." (You've got to love how Hanks signs his tweets with his own Twitter-approved nickname.)

No word yet on what role Hanks will play, but considering how 30 Rock has folded its famous guest stars into the series as characters, rather then themselves (Oprah Winfrey notwithstanding), logic would dictate that Hanks will play someone other than himself. Maybe a new beau for Liz Lemon? Maybe not? He could always play astronaut Mike Dexter...