The Big Bang Theory 200th Episode Guest Stars Revealed

Rob Moynihan
Molly Brinton/CBS

"The Platonic Permutation" -- Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought, on THE BIG BANG THEORY, Thursday, Nov. 19 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Pictured left to right: Kunal Nayyar, Simon Helberg, Melissa Rauch, Jim Parsons, Johnny Galecki and Kaley Cuoco Photo: Monty Brinton/CBS ©2015 CBS Broadcasting, Inc. All Rights Reserved

Holy guest stars, Batman!

Adam West

Adam West

The Big Bang Theory celebrates its 200th episode on February 25 with a handful of familiar faces and a new friend: Television's original Batman Adam West will appear as himself for the first time on the CBS comedy.

Other guest stars returning for the celebration include Wil Wheaton as himself, John Ross Bowie as Caltech colleague Barry Kripke, Christine Baranski as Leonard's (Johnny Galecki) mother, Dr. Beverly Hofstadter, and Galecki's fellow Roseanne alum Sara Gilbert reprising her role as Leonard's ex-girlfriend Leslie Winkle.

The Big Bang Theory airs Thursdays at 8/7c on CBS.