Young Sheldon star Raegan Revord had to abide by one Big Bang Theory rule ... character’s hair was shorter, it was nearly as short as when actress Kaley Cuoco’s character Penny got a haircut ...

but judging by the first trailer for CBS's new prequel series Young Sheldon, they're surprisingly endearing in a nine-year-old. SEE ALSO: 'The Big Bang Theory' will continue to haunt your ...

Click here to see the clip. 3. Educating Penny Sheldon turns behaviorist—employing "operant conditioning techniques building on the works of Thorndyke and B.F. Skinner"—when he reinforces ...

After The Big Bang Theory, Cuoco had a short-lived but poignant role in the dark comedy of The Flight Attendant, while completing several other projects. Penny is also referenced in Young Sheldon ...

American sitcom The Big Bang Theory centers around friends Leonard Hofstadter (Johnny Galecki), Sheldon Cooper (Jim Parsons), Penny Teller (Kaley Cuoco), Howard Wolowitz (Simon Helberg ...

Not knowing what to expect, Sheldon buys baskets of bath items, hoping to return some of them based on Penny's gift. This Big Bang Theory episode is filled with Sheldon's signature physical comedy ...

The Big Bang Theory dropped pure chaos in The Deception Verification when Sheldon barged into Penny’s apartment yelling “Ah-ha!”—only to catch Leonard hiding on the couch. Turns out ...