Lance and Lacey finally got into Len's good graces last week. In rehearsal, Lacey tells Lance that they have the mambo and the jitterbug this week. Lance invited his father and his grandfather out to see his jitterbug, since his grandfather was in WWII and knows the culture of the era. Lance also rehearses the mambo but apparently didn't have a relative from Latin America or wherever, so that gets short shrift.

Lance and Lacey begin their mambo. Lacey looks really pretty this week. I like her hair and makeup. Her dress? Not so much. It's a basic black dress with a rooster tail made of ribbons on the butt -- it looks like she's pooping a fountain of ribbons. Not a good look. Their mambo looks sharp to me, although admittedly I'm not as familiar with this dance. They don't have any major mistakes that I can see, and Lance does a great job of playing to the crowd and the cameras without mugging. They do one cool move that Kym and Warren actually did as well -- Lacey does a modified death drop and then freezes in the backbend while Lance does some solo moves. That has got to take abs of steel.

The crowd gives them a standing ovation and Lance is pumped. Len says that he's been tough on them, but it's all about where you finish in the competition, and he thinks this was their best routine so far. Bruno pronounces it semifinal material, and is happy to see it. Carrie Ann thinks it was a showstopper, and the best dance so far also. Backstage, it's time for scores: Carrie Ann 10, Len 9, and Bruno 9. Lacey nearly falls over when she sees the 10. Lance thanks his grandfather for being there, as he's clearly a good luck charm. Lance adds that they've timed their resurgence just right, and they're hoping for more tens.

So the first round is over, and the second begins with Brooke and Derek at the bottom of the scoreboard. Each couple got to choose from the four new dances this year, and then Len visited them for a master class. Then there's a super lame intro where Len dances on stage with Cheryl and Kym before waking up from that dream. It just takes too long. I'd rather see more time with Len and the couples. First he visits Lance, whose biggest problem is that he's pigeon-toed. Len comes in with no shoes on as a joke. He dances with Lance and shows him how to avoid being pigeon-toed. It involves turning out your thigh. Next, Len visits Cody to work on the hip action. He gets him to roll his hips, and Cody realizes that Len is not that scary. Len goes to see Brooke to get her to straighten her legs at the appropriate times. Finally, Len goes to help Warren with his footwork, especially his flicks and kicks. In return, Warren shows Len how he did his solo move from last week. Len is actually pretty good at it!