The Agent Carter star made Lady Gaga's "Bad Romance" look good.
The Agents of S.H.I.E.L.D. star recreated Britney Spears' "Toxic" music video.
No one expected the actress to perform THe Offspring's "Pretty Fly (For a White Guy)."
Who knew Gregg had heard of Wreck-X-N-Effect's "Rump Shaker"?
The Chrisley Knows Best star embraced his feminine side while covering "Man! I Feel Like a Woman!" by Shania Twain.
The Real Housewives of Atlanta star channeled RuPaul with her cover of "Supermodel (You Better Work)."
The USA reality star thrusted his way through Robin Thicke's "Blurred Lines."
The Fashion Police co-host demanded "Respect" à la Aretha Franklin.
The Smash star showed she knows how to "Shake It Fast," just like Mystikal.
No one does a power ballad like Night Ranger...or Cohan, when she's covering the supergroup's "Sister Christian."
The actress traveled back to the '80s with her rendition of Whitney Houston's "I Wanna Dance with Somebody (Who Loves Me)."
Cohan got into the groove singing "Flashdance... What a Feeling" by Irene Cara.
Just Silentó, the actress made the audience "Watch Me (Whip/Nae Nae)."
The Teen Wolf star rocked out to Harvey Danger's "Flagpole Sitta."
You know her name, but that didn't stop Hadid from performing The Ting Tings' "That's Not My Name."
The actor took on A-ha's "Take On Me."
The supermodel asked two of the five Backstreet Boys to back her up for "Larger Than Life."
Fluffy got the crowd in the mood with Color Me Badd's "I Wanna Sex You Up."
The MMA fighter got "Physical" in the same manner as Olivia Newton-John does.
The actor made his intentions known with his cover of Bobby Brown's "My Prerogative."
The Magic Mike XXL star dressed in drag to sing Donna Summer's "Hot Stuff."
The actress-producer padded her shorts to do Nicki Minaj's "Anaconda."
The Nashville actress strutted alongside the lady herself—Christina Aguilera—to "Lady Marmalade" from 2001's Moulin Rouge.
Wearing Apple Bottom jeans and boots with the fur, the Telenovela star got low to Flo Rida and T-Pain's "Low."