Actor Simon Helberg says that when he began playing Howard four years ago, he didn't expect that his character would be the one to end up in the most stable, mature romantic relationship on The Big Bang Theory.

If you've been watching "The Big Bang Theory" this season, you may have noticed that Penny could be re-evaluating her break-up with Leonard. And that it appears a reunion could be on the horizon.

But that doesn't mean there won't be a bump or two along the way.

If you love Sheldon, Leonard and Penny, we've got good news. They'll be around for at least three more years.

CBS has signed off on a three-year extension for the hit series. The new deal will see the show run until at least the 2013-14 television season, reports EW.

Get ready! Evil Wil Wheaton is back on tonight's all new "Big Bang Theory."

Wheaton returns for his third appearance as the evil version of himself in the episode called "The 21-Second Excitation" that centers around the gang attending a screening of 'Raiders of the Lost Ark" with some new footage inserted.

As actress Kaley Cuoco returns to work on "The Big Bang Theory," she says her injury won't be worked into the stories but will be hidden.

After two weeks recovering from a broken leg, actress Kaley Cuoco will return to the set of "The Big Bang Theory" this week.

Cuoco broke her leg after she fell off a horse and was forced to miss the filming of two episodes of the hit series while she recovered.

Actress Eliza Dushku has signed to guest star on the current season of "The Big Bang Theory."

Only a few more weeks until the return of "The Big Bang Theory" and we've got news on some great guest casting.

"Star Trek" alum George Takei will have a guest role on the upcoming season. And he'll cameo in an episode that features the return of Katie Sackoff.

Curious about what TV's "The Big Bang Theory" would have been like without Kaley Cuoco and with Amanda Walsh in the role of Penny?

The original pilot has been posted to YouTube in three parts.

You can watch all three below.

Actress Mayim Bialik, best known as the star of NBC's "Blossom," has signed on for a pivotal role on the upcoming season finale of "The Big Bang Theory."

Who will she play, you ask? Well, that's a bit of a SPOILER so if you don't want to know, please stop reading now....

Actor Wil Wheaton is reprising his role as the evil version of himself for an upcoming episode of "The Big Bang Theory."

Last year, Summer Glau played herself on CBS's hit comedy series, "The Big B Bang Theory."   Earlier this week, Wil Wheaton showed up on the series in a guest-role. So who's next? It looks like the woman who resurrected Starbuck will play a role on an upcoming episode. The Chicago Tribune's Maureen Ryan reports that [...]