For 12 seasons, The Big Bang Theory entertained us with stories about a group of scientist friends who, despite their differences, showed us the true meaning of friendship. From its debut in late ...

However, before the show debuted, the creators had planned for Sheldon Cooper to be portrayed by Johnny Galecki. In The Big Bang Theory, Sheldon Cooper was played by Jim Parsons. A role that fit ...

The character was a constant rival for Sheldon Cooper (Jim Parsons) and Leonard Hofstadter (Johnny Galecki) in the original show, being introduced in the second season of The Big Bang Theory.

Sheldon's older brother grew up before viewers ... Barber — who was previously a guest star on The Big Bang Theory — will return to Georgie & Mandy's First Marriage in a dream sequence ...