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 on the next ... more 
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 on the next episode of The Big Bang Theory airing Thursday at 8/7c. Only CBS less 
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Mon, Apr 29, 2013 5:58 PM EDT