Jennifer Grey and partner Derek Hough did a Cha Cha to a score of 30 out of 30 points, then they returned to dance a Waltz that earned them a second perfect 30.
"It was kind of emotional," Hough said.
"He was crying like a baby but I got him to pull it together," Grey said. "I said, 'Pull it together, Derek. It's just a dance show.'"
Dancing their way to second place with the judges, Kyle Massey and his partner, Lacey Schwimmer, scored an almost perfect 29 for their Samba, and came back with 29 more for their Argentine Tango.
"What more could we have possibly asked for?" Massey said. "I have no words to express how excited I am, except for sexy."
One point behind them was Brandy and her partner, Maksim Chmerkovskiy.
They began the evening with triple nines for their Paso Doble, and then they returned to score triple tens for their Argentine Tango.
"I'm just happy that we were able to give our all tonight and be the best that we can be," Brandy said.
"It's up to the viewers and hopefully they'll reward Brandy with the finale and beyond," Chmerkovskiy said. "I just feel very proud of her accomplishments."
Bristol Palin and partner Mark Ballas are proud of theirs, too.
Although they're at the bottom of the judges' leader board, they got their best score of the season, 27, for their Paso Doble. They later added 26 more points for their Waltz.
"I'm blessed to be here," Palin said. "I'm blessed to have opportunities like this show and to have fans out there that keep voting us in. I'm just thankful to have made it this far."
Tuesday is the toughest cut of the season. One couple gets booted just before the finals.
The results show will feature the music of Annie Lennox and Enrique Iglesias.
(Get a dance-by-dance recap of all the action in week nine of 'Dancing With the Stars.')