The Big Bang Theory is not just one of the longest-running TV comedies in US television history—it’s a pop-culture phenomenon ...

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 ...

If you look closely, though, the writers revealed Leonard Hofstadter’s IQ in a subtly way early on, and let’s say he’s almost as smart as Sheldon. While fans largely think of Sheldon as the ...

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 ...

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 ...

When we first meet The Big Bang Theory's Leonard Hofstadter he is a self-proclaimed nerdy scientist who instantly falls in love with his new neighbour Penny. Though it seems unlikely that budding ...

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 ...

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?