From 'Star Trek' actors like William Shatner to science experts like Stephen Hawking, The Big Bang Theory has been host to a wide array of guest stars, including Sara Gilbert, who played Leslie Winkle ...

The entire cast, including Colbert, burst out laughing at Galecki's answer. Colbert then moved on to ask Cuoco about the alleged rumour that never once in the twelve years of the show's production was ...

With CBS and Chuck Lorre doubling down on TBBT spin-offs, one character from the main cast needs his own show.