'Big Bang Theory' Cast Channels GREASE, CHORUS LINE for Charity

The stars of CBS's hit comedy THE BIG BANG THEORY, Jim Parsons, Johnny Galecki, Melissa Rauch, Kunal Nayyar, Kaley Cuoco, Simon Helberg and Mayim Bialik channeled classic musicals for the 24th and final "A Night at Sardi's" benefit for the Alzheimer's Association. The event was held last night at the Beverly Hilton Hotel.

While Kaley Cuoco channeled A CHORUS LINE's 'Val' with a re-enactment of "Dance 10 Looks 3," the rest of the cast proved that they "go together" with a performance from GREASE.

Check out photos from the night below:

About THE BIG BANG THEORY: Leonard and Sheldon are brilliant physicists - geniuses in the laboratory, but socially challenged everywhere else. Enter beautiful, street-smart neighbor, Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard and Penny have finally gotten engaged. Even Sheldon has found a female companion, entering into a "Relationship Agreement" with neurobiologist Amy Farrah Fowler, who recently asked him to take a break because she is frustrated with how slow their relationship is progressing. In their free time, Leonard and Sheldon enjoy fantasy role-playing games with their ever-expanding universe of friends, including fellow scientists Koothrappali, Wolowitz and Wolowitz's adorable microbiologist wife, Bernadette.