"The Big Bang Theory" knows how to do Comic-Con!
Although no stars were slated to appear on the CBS hit sitcom's 2013 panel at the Con in San Diego this year, several familiar faces still popped up to geek out with the series' fans, E! News reports.
Not only did star Melissa Rauch end up moderating the panel, but also Johnny Galecki made a surprise appearance as a fan waiting in line to ask a question ... in costume! Yes, Mr. Galecki was dressed in Princess Leia's bounty hunter disguise from "Return of the Jedi." "I just couldn't stay away," he told the crowd after revealing himself.
"This show has the best fans in the world," Mr. Galecki also said. "The fact that we gather here in July before the show goes back into full swing production in August gives us the shot in the arm we need."
But "The Big Bang Theory," which is TV's highest-rated comedy, had one more epic surprise for fans: World-renowned author/physicist Stephen Hawking, who has guest-starred on the show, recorded a special video message to introduce the panel.