In the 17th episode of the debut season of "The Big Bang Theory," something huge happens: Leonard Hofstadter (Johnny Galecki) ...

In season 1 of The Big Bang Theory, Leonard was introduced as a hapless genius who was a doormat overall. He let his roommate, Sheldon Cooper, completely control his life, and he was at the ...

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.

Then there is Leonard Hofstadter’s surname, which I also did not know had a deeper context. He was named after Robert Hofstadter, a real-life physicist who won the Nobel Prize in 1961.

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.

Leonard Leakey Hofstadter. Yes, he’s insecure, we get it… (Picture: CBS) The rest of the characters have gone through some form of growth since the first episode zapped onto our screens ...

Life turns upside down for Leonard Hofstadter when a girl named Penny moves across the hall from him and Sheldon. Soon, Leonard falls madly in love with this beautiful wannabe actor. Though he ...

CBS Photo Archive / CBS via Getty Images As far as most people are aware, the first episode of the series introduces main characters Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Johnny ...

The Big Bang Theory's Johnny Galecki, who plays Leonard Hofstadter on the show, sat down with myTV38. Q: Who do you think watches the show? Q: Why do you think viewers like the show so much?

The series followed best friends, roommates and physicists Sheldon Cooper (Jim Parsons), Leonard Hofstadter (Galecki) and Howard Wolowitz (Simon Helberg). Galecki’s Leonard married Cuoco’s ...

Of all the different characters on both shows though, Ross Geller and Leonard Hofstadter stand out as the two linchpins of both respective groups of friends thanks to their warmth, sensitivity ...