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 ...

The Big Bang Theory fans showed their love for the show with their reactions to this season 1 moment featuring Penny (Kaley ...

Despite being a pretty wholesome show, The Big Bang Theory's 12-season run features its fair share of controversial episodes.

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 ...

Leonard Hofstadter was never the flashiest guy in the room but he still managed to rattle Penny more than once in 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.

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