'Big Bang Theory' Cast Reveals Their Special Guest Fanboy Moments

The cast of The Big Bang Theory is getting ready to return to CBS for two more seasons, but first they dropped by San Diego Comic-Con to discuss a wide variety of topics with fans.

One of those questions was, "What guest star gave you a fanboy moment?" and the answers did not disappoint.

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Some were simple favorites, like Johnny Galecki's choice of Bob Newhart. The comedy legend has appeared on the sitcom four times in recent seasons, playing a former TV scientist named "Professor Proton."

Kevin Sussman took a geekier approach to his picks, which were Star Trek: The Next Generation star Wil Wheaton and the late Batman actor Adam West.

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"When I first came on the show, I met Will Wheaton, who I was a huge fan of," Sussman said. "So I tried to play it off, but within minutes of meeting him he was teaching me card games. And then years later when Adam West was on set, Will Wheaton the whole time, was talking about how it was to be in the same room with Adam West. Then I got to see him go over and do the thing I did to him, 'Oh, Mr. West....'"

Kunal Nayyar lived out his own fantasy when Wonder Years' Danica McKeller guest starred on the season three, episode "The Psychic Vortex."

"I got to make out with Danica McKeller from Wonder Years," he said. "And when I was in New Dehli I had been nervous about my first kiss and so then I thought about it just like Kevin and Whinney, and so then in real life, well real Big Bang life, I got to kiss her. And then she was pregnant nine months later. Just facts."

The Big Bang Theory will return to CBS on Monday, September 25 at 8 p.m.