The Big Bang Theory is tightly written and perfectly timed, but some of its best laughs come from moments unscripted.

Sheldon Cooper is undeniably the most iconic character from "The Big Bang Theory" sitcom. Here are the eccentric scientist's ...

Stacker has ranked the top 25 episodes of "The Big Bang Theory" according to IMDb user ratings.

Originally, the lead character of Sheldon Cooper, played by Jim Parsons on "The Big Bang Theory," was supposed to be asexual — but that particular identity changed when the character of Amy Farrah ...

Raj Howard Leonard Penny and Sheldon looking at a computer on The Big Bang Theory - CBS Created by Chuck Lorre and Bill Prady, "The Big Bang Theory" was a massive success for CBS during its ...

To underscore those rare instances when he succumbs to his humorous side, Sheldon will punctuate his jokes and pranks with the triumphant exclamation “Bazinga!” after (sometimes long after) his jokes ...

From most annoying to fan favorites, here’s how every Big Bang Theory character ranks by personality, humor, and impact.

The Big Bang Theory did not resolve all of Sheldon's mysteries for people, even after a 12-season run. That is where Young Sheldon comes in.