Kate Walsh, Kate Burton, and other currently-nameless actors of Grey's Anatomy seasons past will guest star in an episode in February 2012. The twist? The entire episode is set in an alternate reality, to show us the big "what if", which is, of course: Is it even possible that this show could have turned out worse?

Bo Derek will guest star on CSI: Miami as a "well-preserved" (that totally makes it sound like she was frozen) mother that runs a horse stable where, of course, a murder was committed. In the following episode, Raquel Welch will play the mother of Diego Navarro.

Dean Winters (better known as Dennis Duffy on 30 Rock, or the guy from those annoying Allstate commercials) will play Will Arnett's brother on Up All Night. Hopefully he's gotten out of the beeper business.

Clark Duke (Kick-Ass, Hot Tub Time Machine) will guest star on New Girl as Cliff, an intern who works for Julia (Lizzy Caplan), Nick's newest love interest, and is inspired by Nick to quit his internship to become a lawyer, because quitting is always the logical thing to do.

Denise Vasi (All My Children) will star on VH1's Single Ladies as Raquel, a close friend of Keisha's. Well, it's a step up from AMC...

Madonna will perform at the Super Bowl halftime show at the Lucas Oil Stadium in Indianapolis February 5. The performance won't be all Madge, though -- it will be "imagined" by Cirque du Soleil. At long as it isn't a repeat of this year's Black Eyed Peas Tron-wannabe disaster, we're good.

The CW is developing Poseurs, a pilot about a woman (played by Sara Rue) who marries her female friend in order to keep her fancy NYC apartment, which doesn't allow roommates... since everyone liked I Now Pronounce You Chuck and Larry so much, right?

CBS changed the title of Rob Schneider's new sitcom, ¡Rob! to Rob, without the ridiculous exclamation points. (Unfortunately, ads may still say ¡Rob!. You win some, you lose some.) The Eye also changed the title of the new series The 2-2 to something that sounds less like what a ballerina wears and more like the name of a cop drama, NYC 22.

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