Bob Newhart to Make Sitcom Return on The Big Bang Theory

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The Big Bang Theory will soon welcome a television legend.

Six-time Emmy Award winner Bob Newhart has signed on to portray Professor Proteon, the former host of Sheldon's favorite science series from many years ago.

Bob Newhart Pic

Show sources tell TV Line that Sheldon will track down Newhart's character online and learn that he's available for parties and events. Naturally, he therefore invites to "professor" over to his home.

The Big Bang Theory Season 6 is off for the next two weeks, while this episode will air on May 2.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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TBBT Quotes

What do Sheldon Cooper and the black hole have in common? They both suck.

Professor Hawking

Amy: Sheldon, there's something else I've been wanting to say, but before I do, I just... I want you to know that you don't have to say it back.I know you're not ready, and I don't want you to say it just because social convention dictates...
Sheldon: I love you, too.
Amy: You said it.
Sheldon: There's no denying I have feelings for you that can't be explained in any other way. I briefly considered that I had a brain parasite. But that seems even more far-fetched. The only conclusion was love.