By Ashley Thompson

The couples are reunited after last week's switch-up and it's iconic dance night. Famous dances from movies and music videos is the theme for this week and some of the dancers are showing their age with what they know and don't know about the origin of these routines. Erin is off covering the MLB post season so the ever so funny Leah Remini is filling in. Also, there are four judges again this week, with Olivia Newton John as the fourth judge (and we're pretty sure she's going to really love the first performance... but maybe not as much as the second... or fourth).

Hayes and Emma - Grease - Jazz - 32

Andy and Allison - Singing In The Rain - Jazz - 40

Alexa and Mark - Britney Spears' Slave VMA Performance - Cha Cha - 30

Bindi and Derek - Dirty Dancing - Rumba - 40

Paula and Louis - Madonna's Vogue - Jazz - 24

Carlos and Witney - Magic Mike - Rumba - 38

Nick and Sharna - Saturday Night Fever - Samba - 39

Alek and Lindsay - Jailhouse Rock - Jive - 30

Tamar and Val - Rhythm Nation - Jazz - 40

Items of note: Bindi and Derek recreated Baby and Johnny's water lift just like in the movie, however, Derek looked to be struggling a bit more than Patrick did. Paula Deen rode Louis. Like, rode him during scores reenacting a portion of their performance. Witney had a near nip slip! She was covered but the cameraman and other staff definitely knew and had her correct her costume during scores. Alek actually made facial expressions!

Judges scores and votes from the past two weeks have been combined leaving Paul and Louis as well as Alexa and Mark. It's pretty obvious based on the history of scores alone who is leaving but it has to be said... Paula is headed home. Next week is Halloween Week and group dances! Can't wait!

Photo credit: ABC