Last week, Kirstie got caught up in the acting and forgot to dance. This week, they have the Argentine tango. One of my editors, Mindy, will be really happy to see that Kirstie has her hair up for rehearsal, as we were discussing on Twitter how gross it was that Kirstie always leaves her hair down and she's all sweaty. [Editor's Note: Indeed I am, Kim! We did it! -- Mindy] As they rehearse, Kirstie keeps stumbling and Maks has to tell her that she's not eating enough. She claims to eat 1400 calories per day. With all that activity? That's nuts. No wonder she's so loopy all the time. She's starving!

The first half of their tango is really amazing. They are totally in sync, and Maks puts in a lot of dramatic lifts and hops. Kirstie keeps right up with the footwork. Something happens about halfway through where Kirstie slows down or loses focus or something and you can see Maks whispering in her ear, talking her through it. She finishes just fine, but the end didn't have the polish and the vibrancy that the beginning did. And the end also has a lot of walking around and posing, which isn't really dancing. So that was half of the best routine that Kirstie has done. What did the judges think? Bruno found it sensual and aggressive, and her footwork was brilliant. Carrie Ann thought it was realistic, and maybe her best dance of the season. Len thought they did a great job of creating an atmosphere. Scores: Carrie Ann 9, Len 9, and Bruno 10. Oooohkay. Their song is "Cobrastyle" and neither of them knows it.

Package on how the couples prepare for the Instant Dance without knowing the song. Chelsea and Mark struggle, because Chelsea admits that she normally keys her movements to the lyrics, and not knowing the song makes that impossible. But it's all a fakey fake setup to bring back Kyle Massey, who is inexplicably wearing a top hat. So Kyle blah blah blah and Chelsea blah blah blah and whatever. They're just killing time so that the couples can rehearse.