'DWTS' Finalists Rehearse for the Big Day

Get a look behind the scenes as the final four couples prepare for the finale.
3:00 | 11/25/13

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Transcript for 'DWTS' Finalists Rehearse for the Big Day
"Dancing with the stars" time. One more couple sent home tonight. The finale tomorrow. They spent all day sunday reversing. Melissa rycroft has the latest as they go to the wire. Reporter: It's deja vu for "dancing with the stars" viewers, who might remember corbin's quick step. ♪ I'm going to the country don't you want to go ♪ Reporter: Jack's jive. ♪ But she never believed ♪ Reporter: Bill's vienese walt. Are you nervous? Scared. Sad, excited. Reporter: And dizzy. Finalists will also free style. We're excited about it. Nervous, nervous. One wrong step can send us both to the hospital. Reporter: And the relay as tlc sings their song, no criscrubs. I hope we can contain ourselves. Reporter: It's more than dancing that counts. Viewers' votes helped bill engvall survive. From day one, I said I'm team bill. I did not expect to see you here. We didn't either. This is the most amazing wonderful journey. I've had the best time of my life. Whatever the outcome is, we've won. Reporter: Four-time winner derek hough has a half-baked idea I've been doing the bake sale. They open the blueberries, it's like, vote for amber and derek. ♪ Reporter: Your dad posted a video on youtube. I saw that. Reporter: Were you behind that? Will the idea work? The world fines out hours from now. In is it. This is it. Reporter: For "good morning america," melissa rycroft, abc news, los angeles. Watch it all tonight. Wednesday all four couples right here in times square. "Dancing with the stars" afterparty. Now over to lara and sam.

This transcript has been automatically generated and may not be 100% accurate.

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