Rejoice, "Big Bang Theory" fans: Penny and Leonard are officially engaged!Yes, after years of dating and four rejected proposals between them, Leonard finally put a ring on it on Thursday's "The ...

On this week’s episode of The Big Bang Theory, Leonard and Penny realize that something they frequently joke about is actually a serious detriment to their relationship. As even the occasional ...

Co-star Johnny Galecki tells THR that the upcoming Valentine's Day episode will be a big one for the couple. By Lesley Goldberg The Big Bang Theory Cuoco Galecki Hugging - P 2013 “Next week we ...

On 'The Big Bang Theory,' Leonard decides not to donate his sperm to Zack and Marissa, and Penny and Wyatt talk about her decision not to have kids.

Leonard replied.” But Gates wasn’t up for a hug, saying, “How about a tissue?” Penny didn’t know about this tearful reunion but she was about to find out.

However, pretty soon his world is put upside-down when Penny gifts Sheldon an autographed napkin from his idol, Star Trek actor Leonard Nimoy. This leads to Sheldon hugging Penny voluntarily for ...

Was it Penny or Leonard who said they were a vegetarian except for fish and steak? Only the biggest fans of The Big Bang Theory will be able to successfully identify who said all 12 of these quotes.

Finally, he went directly to Penny, and successfully guilt-tripped her into talking with Leonard about letting him go in her stead, ending with what turned out to be a fatefully overzealous hug.