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.

The Big Bang Theory writers did a great job, over the course of 12 seasons, of crafting immersive backstories for each of the main characters. By the time the show premiered its series finale ...

There were two full episodes without Penny early on in Season 4 of The Big Bang Theory.The character was absent in Episode 5, "The Desperation Emanation," and Episode 6, "The Irish Pub Formulation." ...

Penny shows up on The Big Bang Theory in the very first episode and effectively turns Leonard and Sheldon’s world on its head. The pretty blonde is the polar opposite of the neighbors next door.

Cuoco’s Penny didn’t enter “The Big Bang Theory” cast until Lorre penned a “do-over” pilot after shooting a failed first version that never aired.

Quigley gave us the inside scoop on the signature styles of Penny, Amy and Bernadette when she took EW’s own Adam B. Vary on a guided tour of the Big Bang wardrobe closet.

A new oral history of The Big Bang Theory reveals more teen queens in contention for the role of bubbly Cheesecake Factory waitress Penny (eventually played by Kaley Cuoco) — including one who ...

Spoilers ahead for the Big Bang Theory Season 12 episode called "The Procreation Calculation." The twelfth and final season of The Big Bang Theory is only just getting started, but viewers should ...

CBS’ The Big Bang Theory took one giant leap for Penny and Leonard during Thursday’s episode. After months years seasons of on-again-off-again romantic tension between lovably loyal Leonard ...

Kaley Cuoco spent over a decade playing everyone’s favorite girl-next-door Penny on The Big Bang Theory.Over the CBS sitcom's 11-season run, viewers saw Penny evolve from Leonard and Sheldon’s ...