THE BIG BANG THEORY: Bill Prady and Steve Molaro Tease An Upcoming ‘Really, Really Cool’ Guest Star

PaleyFest honored THE BIG BANG THEORY on Wednesday night, and the fans were out in full-force to honor some of the coolest nerds on television.

Before the panel, I spoke with THE BIG BANG THEORY executive producers Bill Prady and Steve Molaro about what’s to come — including a top-secret “really, really cool” guest star…

[youtube]http://www.youtube.com/watch?v=YqQ8YOEeT08[/youtube]

Best guesses?!

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