The Big Bang Theory fans showed their love for the show with their reactions to this season 1 moment featuring Penny (Kaley ...

Penny has a strange relationship with her family in The Big Bang Theory, and one mystery doesn't help matters.

The Big Bang Theory built a big universe around its central leads, but this set of characters was noticeably absent for most of the series.

For fans who were looking for an update on Sheldon's best friend, Leonard (played by Johnny Galecki on "The Big Bang Theory"), things were a little scarce. While none of the other "Big Bang Theory ...

By Lesley Goldberg The Big Bang Theory Beta Test Episode - H 2012 Leonard and Penny 2.0 officially kick off Thursday when CBS’ The Big Bang Theory picks up on the heels of its risky 100th ...

Leonard Hofstadter and Sheldon Cooper burst onto the scene in The Big Bang Theory as roommates. They technically didn’t need to be roommates, but their relationship seemingly worked. The deeper ...

The song that convinces Penny to join Leonard is "Tootsee Roll" by 69 Boyz. The Big Bang Theory airs Thursdays at 8/7c on CBS. (Full disclosure: TVGuide.com is owned by CBS.) ...

By Lesley Goldberg The Big Bang Theory Cuoco Galecki Hugging - P 2013 “Next week we start shooting the Valentine’s Day episode,” the actor behind Leonard tells The Hollywood Reporter.

Leonard’s father is finally coming to town on The Big Bang Theory! It was announced at Wednesday’s PaleyFest panel that Judd Hirsch has been tapped to play Leonard’s dad, who is a stark ...

In The Big Bang Theory, Leonard Hofstadter spends much of his time trying to keep his roommate Sheldon Cooper happy. Thanks to the roommate agreement he signed when he moved into the apartment ...