Mark Cuban and Kym Johnson prepare for the samba, and meanwhile, he blogs and answers thousands of emails getting votes. Then, just as they start talking about how the compromised between following the rules and making the dance cool, the video cuts out and suddenly Mark is standing on stage. They dance to the I Dream of Jeannie theme song, and he's dressed as a nerd. Carrie Ann says it was fun and full of basics, but it was lacking in some technique. Len agrees that it was entertaining, but that he needs to turn his feet out. Bruno says it was his most entertaining dance to date, but his technique is not there. The audience boos. Scores: 7-7-7, for a 21/30.

Sabrina Bryan and Mark Ballas work on finding Sabrina's vulnerable side while preparing for the rumba. Mark's mom, a Latin champion herself, shows up to help. Their dance is very intimate and sexy. Host Tom Bergeron says to them after, "I think I speak for all of America when I say: Get a room." Heh. Len says her strength is she has no weaknesses, but that there were a couple of over-the-top poses. Bruno says it was a womanly performance and she has great musicality. Carrie Ann says it's difficult to maintain perfection, but that tonight she brought something totally different. "I see the colors of your growth," she continues. Oh, OK, Paula. (The husband chimes in: "She has a growth?") Scores: 9-9-10, for a 28/30.

Jennie Garth and Derek Hough practice the samba, and Derek takes her to a hip-hop choreographer to help her learn to shake it. It seems to help, because on the floor, she manages to look pretty comfortable (if you don't look at her facial expressions too closely). Bruno says it was like "how to samba," and that they didn't shy away from any of the moves, but performance-wise, they kind of "ran out of puff." Carrie Ann says the stumbled a little bit and that she was trying so hard to give them something new, but that, "you have to mean it." Len says he thought it was far better than either of the others did, and that you can't act your way through the samba, and she did fine without that. Scores: 8-9-8, for a 25/30.

Helio Castroneves and Julianne Hough practice their rumba on the beach to prepare for the show. They dance to OneRepublic's "Apologize," and it's their usual. Carrie Ann says she could tell how much Helio was trying, but that kind of killed their chemistry and personality. Len says it was mechanical and lacking warmth. Julianne looks peeeeeeved. Bruno says he looked in pain the whole time. Scores: 8-7-8, for a 23/30. I blame the Beadazzled turtleneck for killing their chemistry.

Mel B and Maksim Chmerkovskiy, who were shocked to be in the bottom two last week, learn the samba and try to overcome her cold. In the meantime, they also have to fly to London so Mel B can film the Spice Girls video. They dance to "Spice Up Your Life," and it's weird because the dance is fast, but it's a slower version of the song, so it makes the dance seem slow. Len is confused and says they are "M&M ... fruity, sweet, delicious." Huh? He says they flew around the floor and it was fantastic. Bruno says she came back "like a fury," and that thiers was the best samba of the night. Carrie Ann says it was her favorite dance of theirs for the whole season. Scores: 10-9-10, for a 29/30. Wow, Mel B is more shocked than I am. I thought it was fun, but like I said, the tempo of the song did not serve them well. Shows what I know, though.

Cameron Mathison and Edyta Sliwinska try to come up with a story for their rumba. Susan Lucci stops by to give them some tips. More than half of Edyta's outfit seems to be made of string. Their dance is passionate and sexy, but let's see what the judges think. Bruno says no woman is safe because Cameron is on the prowl. He adds that his hard work is paying off. Carrie Ann says their chemistry was awesome, and then she questions whether there was a lift. Len tells Cameron to do up his shirt since the dance is over. He adds that Edyta needs to stop doing the one-legged spins because they're getting on his nerves. Somewhere in there, he says it was good. Scores: 8-9-9, for a 26/30.

Who do you think did the best on Latin night?

Here are some video highlights: 

Mel and Maks' high-scoring samba: