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'Big Bang Theory' Cast Goes Full-On 'Greased Lightning' For Alzheimer's Fundraiser

The Huffington Post The Huffington Post 10/03/2016 Julia Brucculieri
ATHENA IMAGE © Jesse Grant via Getty Images ATHENA IMAGE

The cast of "The Big Bang Theory" goes together like rama lama lama ka dinga da dinga dong. 

(Now that we got that song stuck in your head...)

Kaley Cuoco, Jim Parsons, Johnny Galecki, Melissa Rauch, Kunal Nayyar, Simon Helberg and Mayim Bialik showed off their singing chops when they performed Wednesday at the "A Night at Sardi's" event to benefit the Alzheimer's Association. 

The group, decked out in costumes, took to the stage to perform a few songs from "Grease." By the looks of the photo Rauch posted on Instagram, she got to take on the role of Sandy while Nayyar threw on a leather jacket to play Danny. 

But Cuoco had what was likely one of the most memorable moments of the night, when she took to the stage solo to perform "Dance: Ten; Looks: Three" from "A Chorus Line." The actress rocked a pair of short shorts and a red crop top for her performance. 

She shared an Instagram photo of herself backstage, calling the song "tits and ass" in the caption, and letting followers know she totally "nailed it!"

And if these photos are any indication, we think she definitely did. 

Check out more pics from their performances below: 

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