In The Big Bang Theory, fans got to know the couple of Penny and Leonard (Johnny Galecki), who ended up happily married after a long relationship that, like any real-life one, had its ups and downs.

The Big Bang Theory had plenty examples of this. One example of the latter is Dr. Stephanie Barnett, who pops up in Season 2 for three episodes as a love interest of Leonard. During these three ...

The Big Bang Theory writers dropped the ball by not expanding on the underrated dynamic between two series regulars.

Best known for popularizing the character of Spock, Nimoy has made countless cameos reprising the character, including on CBS' hit comedy "The Big Bang Theory." Perhaps his best appearance on the ...

Keep reading to find out who your favorite The Big Bang Theory stars are coupled up with off-camera. They may not have gotten together as Penny and Leonard on-screen until season 3, but the story ...

Johnny Galecki made Leonard Hofstadter one of The Big Bang Theory's most lovable characters, but he wasn't the only one up for the role — and luckily, one of actors who lost out ended up winning a ...