Leonard and Sheldon decide to whip out the Klingon while Penny and Amy respond in Ubbi Dubbi

“As a psychiatrist, I know how important people's superstitions can be to them.”

The best Big Bang Theory episodes understand exactly what the show is and is trying to be, but its original pilot did not. The Big Bang Theory used to be a very different show, and it certainly was not a good one. The original Penny was fired, cast member...

Penny learns that the secret to dealing with Sheldon is to parent him.

On Sheldon (Jim Parsons) and Amy's (Mayim Bialik) date night, she comes up with an experiment in hopes to speed up Sheldon's romantic feelings for her. Her experiment includes many of his favorite things like The Super Mario Bros. music, Strawberry Quik,...

Some of the best moments of Leonard's psychotherapist always hard-to-please mother (played by Christine Baranski).

Some of the best moments of Sheldon's bible thumping mother (played by Laurie Metcalf).

Just like Schrodinger's Cat, your potential relationship with Leonard right now can be thought of as both good and bad. It is only by opening the box that you'll find out which it is."

“Everyone thinks she's so nice with that squeaky little voice.”

Howard left a strong impression on "The Big Bang Theory." Welcome to MsMojo, and today we’re looking at Howard Wolowitz’s impressions on “The Big Bang Theory” and how they compare to the actual person he’s imitating. Our countdown includes Stephen Hawking...

The Penny-and-Leonard duo has fans at an autograph signing questioning it's legitimacy.

Penny may not be book smart, but she is savage smart. For this list, we’ll be looking at Penny’s fiercest, most badass, and occasionally brutal comebacks and takedowns throughout this long-running sitcom. Our countdown includes Penny's magic potion, messi...

Particle astrophysicist David Saltzberg was the go-to science guy for The Big Bang Theory. He planned the craziness that appeared on the white boards, he added scientific props to the set, and he added science-y lines to the show's script. Ever wonder wha...

Sometimes it's the kindest looking people who can really bear their teeth! For this list, we’ll be looking at the shortest member of the “Big Bang” Gang. But what Bernadette lacks in height, she certainly makes up for in smarts, toughness and savagery whe...

Here are some hysterical and most talked about scenes of The Big Bang Theory! There were so many good ones it was made into two parts!