Mayim Bialik has plenty of favorite moments from her time on The Big Bang Theory, but her favorite Amy and Sheldon moment was small but impactful.

Sheldon Cooper on The Big Bang Theory is based on a real person, and that same person also inspired another character on the show.

Viewers are in agreement that Jeopardy champion, Liam Starnes, looks just like Sheldon Cooper, even though he whiffed on a Big Bang Theory question.

Premiering on CBS in 2017, the series followed boy-genius Sheldon Cooper (Iain Armitage) as he navigated the challenges of growing up as a child prodigy in East Texas.

With Young Sheldon being a prequel to The Big Bang Theory, there are a lot of connections, but these characters are easy to miss.

The sitcom was inspired by one star's "brilliant" nephew Iain Armitage starred as the younger version of Sheldon Cooper Young Sheldon became an instant hit when it premiered in 2017.