There's a pretty famous thing on "The Big Bang Theory" regarding Penny's last name — which is to say, she doesn't have one.

Parsons enjoyed exploring this side of Sheldon's character, revealing why during a "Big Bang Theory" season 5 behind-the-scenes featurette: "On a personal level, I really enjoyed getting to the ...

There were plenty of funny pair ups on 'The Big Bang Theory,' But here are five moments that prove Sheldon and Penny were the show's cutest duo.

True, Sheldon quite clearly, if accidentally, got to second base with Penny. And a drug-addled Penny did coyly joke at the end of the episode about Sheldon helping her to bed.

This week’s Big Bang Theory finds Sheldon in Penny’s bed, but not for the reason some overly creative ‘Shenny’ fanfic writers have dreamt up over the last decade. After years of dating ...

However, we did meet Penny's high-strung mother, Susan (Katey Sagal), and her formerly jail-bound brother, Randall (Jack McBrayer), and they were the perfect chaotic addition to the Big Bang family.

Penny has no time for Sheldon's slut-shaming on the latest episode of 'The Big Bang Theory,' and her response is brilliant.

This unexpected moment between Sheldon and Penny still has Big Bang Theory fans talking. Here’s what really happened during that surprising scene.

The Big Bang Theory has managed to make Penny and Leonard's love life a lot more like Amy and Sheldon's in a surprising way. Read on to get the details.

Sheldon Cooper and Penny didn't seem to have much in common, but the 'The Big Bang Theory' besties might have the been the best friend pairing on the show.