Do you remember that Leonard Hofstadter loved Superman, Dell computers and that he'd never celebrated his birthday? The Big Bang Theory remains one of the longest-running sitcoms in history.

The Big Bang Theory is officially ending after ... there is one character I really couldn’t get on board with. Leonard Leakey Hofstadter. Yes, he’s insecure, we get it… (Picture: CBS ...

An early interaction between Penny (Kaley Cuoco) and Sheldon (Jim Parsons) on The Big Bang Theory proved to be the key to ...

When Chuck Lorre and Bill Prady were coming up with that idea that would become the long-running sitcom The Big Bang Theory, ...

Life turns upside down for Leonard Hofstadter when a girl named Penny ... Only the biggest fans of The Big Bang Theory will be able to answer all these Leonard questions correctly.

In The Big Bang Theory, a comic book is not simply a hobby; they are deeply interwoven into the essence of the character's life.

When The Big Bang Theory first introduced Leonard Hofstadter and Penny, few could have predicted that their unlikely relationship would become one of the series' greatest things.

The Big Bang Theory's Leonard Hofstadter was the glue that held his group of friends together. No one helped and supported Sheldon and his unusual demands more than Leonard. He would even stick to ...

Penny has a strange relationship with her family in The Big Bang Theory, and one mystery doesn't help matters.

six years after the finale of their CBS sitcom “The Big Bang Theory.” The series followed best friends, roommates and physicists Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Galecki ...