The Big Bang Theory: Bob Newhart As Professor Proton

Tonight, CBS is airing another brand new episode of The Big Bang Theory called "The Proton Resurgence." The episode features a guest appearance by Bob Newhart. According to the CBS description for "The Proton Resurgence," "Sheldon and Leonard hire Professor Proton (Bob Newhart), the host of their favorite childhood TV show, to perform. Also, Howard and Bernadette run into trouble babysitting Raj's dog." "The Proton Resurgence" episode of The Big Bang Theory airs on Thursday, May 2, 2013 starting at 8 PM ET on CBS. We've embedded close to a two minute sneak preview of the episode below.