Last week, we found out (to the shock of no one) that Cloris and Rocco were in the bottom two, and ultimately Rocco went home. This week, the couples will have to do four new dances, which I'm kind of excited about, because I think the pros will seem more fresh since they aren't used to doing these routines a million times. But it also could mean that the routines will kind of suck, because the pros aren't familiar with the moves. Whatever happens, it will be (say it with Tom now) LIIIIIIIIIIIIIIIIIIIIIIIIIVE!

What is going on with Samantha's hair tonight? It's like all teased but then slicked back in a sort of modified beehive. It looks weird. I like her hair more loose and curly. Not that I spend a lot of time thinking about Samantha's hair. I really don't. (I kind of do.) No, I really don't.

Tom announces that it's the halfway point, which makes the fact that Cloris is still there even more puzzling. Okay, Derek and Brooke must be doing the jitterbug, because they're all ''50s style. That means Derek has a pompadour. The problem is that Derek has been growing his hair out -- in one rehearsal clip a moment ago, it was long enough that he had the sides and top pulled up into a ponytail to keep it out of his face. So imagine all that hair teased up into a pompadour. Yeah. It's not a good look. And then Julianne must also have the jitterbug because she's dressed like Lucille Ball. Are the people on this show capable of thinking past the most obvious stereotypes? Then again, I guess they're trying to appeal to a broad spectrum so they need to go for the obvious.

Tom gives the lowdown on the routines: there are four new dances and eight couples, so two couples per dance. The couples doing the same dance will be back-to-back so that we can compare and contrast. Tom asks Len to explain what the judges will be looking for in these routines. Len says that West Coast swing is all about being smooth and down and dirty, the hustle is all about '70s disco, salsa is hot and spicy, and the jitterbug is the jive plus rock and roll. The look on Derek's face while Len is talking is hilarious -- Derek looks like he's never heard any of the information that Len is imparting before. Like if there were a thought bubble over his head, it would say, "The hustle is about '70s disco? No one told me!" Sometimes I don't think Derek is all that bright.