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.

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.

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.

Unfortunately, no other The Big Bang Theory character appears in the ... spinoff and was inspired by Sheldon's love for both ...

The Big Bang Theory’s Sheldon Cooper and Leonard Hofstadter — two of the most iconic characters on television — were not named randomly. Instead, they were actually paying tribute to an acting legend.

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 ...

If you’re a fan of The Big Bang Theory, you might know that the ... introduces main characters Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Johnny Galecki), as well as Penny (Kaley Cuoco ...