The cast and crew of The Big Bang Theory appeared at Comic-Con last week in San Diego to an explosive reception. This was the show's third appearance at the geek-oriented event. The cast signed autographs, Wil Wheaton moderated a Q&A panel with the cast and crew, and there was a special surprise thrown in too. Here's a round-up of all the Big Bang happenings at Comic-Con.

-Mayim Bialik (Blossom) is to reprise her role as Sheldon's potential love interest, Amy Fowler, in the Season 4 premiere of the show, it was revealed at Comic-Con.

-Steve Wozniak, the co-founder of Apple Inc., is to appear in the show during its fourth season.

-Barenaked Ladies, the band behind the show's theme tune, appeared at Comic-Con to perform the theme tune live. Check out a video of their performance on YouTube.

-The cast also performed a sing-along of Soft Kitty, which you can watch on YouTube.

-Leonard & Penny won't be rekindling their romance again any time soon, according to show-runners Chuck Lorre and Bill Prady.

-E! Online's Kristin Dos Santos interviewed all the cast members at the event. Check out her video interviews at the E! website.