When people think of sitcom actresses they think of women like Sofia Vergara, Lisa Kudrow, and Debra Messing. One other big name that they will always consider when thinking about sitcoms is always going to be Kaley Cuoco! Kaley Cuoco is a talented and beautiful actress who has won awards including the Critics' Choice Television Award for Best Supporting Actress in a Comedy Series and the People's Choice Award for Favorite Comedic TV Actress.

She starred on the show Eight Simple Rules from 2002 until 2005. After that, she starred on The Big Bang Theory from 2007 until 2019! She has spent so many years in front of the camera making people laugh! Continue reading to find out what happened behind the scenes of her two biggest sitcoms.

15 Kaley Cuoco Earned $1 Million Per Episode Of 'Big Bang Theory'

Kaley Cuoco earned a whopping $1 million per episode of Big Bang Theory. The creators of the show knew that she was pivotal to the storyline and were willing to do just about anything to make sure she stayed on board for every season… Including paying her such a hefty amount of money!

14 John Ritter Died Very Suddenly After Vocalizing Chest Pains On The Set Of '8 Simple Rules'

John Ritter died very suddenly after vocalizing that he had chest pains on the set of 8 Simple Rules. John Ritter’s death was very tragic and emotional for the rest of the cast on the show, obviously his family, and the world of fans that he had from his time starring on sitcoms.

13 Amanda Walsh's Character In 'Big Bang Theory' Was Replaced By Kaley Cuoco

When Big Bang Theory was still being developed, Amanda Walsh was supposed to be the leading character in the show. The creators of Big Bang Theory completely got rid of her and replaced her with Kaley Cuoco's character, Penny. Apparently Amanda Walsh's character was too aggressive.

12 '8 Simple Rules' Was Based On A Book Written By W. Bruce Cameron

8 Simple Rules was a super interesting show to see in its time. Kaley Cuoco surely made the show a lot more fun to watch! It is interesting to find out that the show itself was based on a book that was written by an author named W. Bruce Cameron. He is also the author of several other books.

11 The Elevators In 'Big Bang Theory' Never Actually Moved

On Big Bang Theory, there are plenty of elevator scenes we get to see. As interesting as it might be, the elevators in Big Bang Theory never actually move at all. It would probably complicate things for the director and camera crew if the elevator actually moved up and down during filming.

10 On '8 Simple Rules' Bridget's Love For Catcher In The Rye Was Meant To Be Ironic

In the show Eight Simple Rules, Kaley Cuoco’s character, Bridget, loved reading the book Catcher in the Rye. Her character was supposed to be a tad bit airheaded so the fact that they wrote it into the show that Bridget enjoyed such an intense piece of literature was sort of funny and definitely ironic.

Related: The Big Bang Theory: 15 Fun Facts From Behind The Scenes

9 Kaley Cuoco And Johnny Galecki Secretly Dated From 2007 To 2009 While Filming 'Big Bang Theory'

Kaley Cuoco and Johnny Galecki secretly dated from 2007 to 2009 while they were filming Big Bang Theory. No one really knew about their relationship because they were so good at keeping things under wraps. When they broke things off, they remained good friends with each other and that is why they were able to continue filming together.

8 Kaley Cuoco Is Six Years Younger Than Amy Davidson Even Though She Played The Big Sister on '8 Simple Rules'

On 8 Simple Rules, Kaley Cuoco played Amy Davidson’s older sister. In real life, Amy Davidson is actually six years older than Kaley Cuoco! Luckily on the show, no one could really tell that the age difference was so big and no one could tell that Kaley Cuoco was technically the "younger" sister in the situation.

7 Mayim Bialik From 'Big Bang Theory' Has A Ph.D. In Neuroscience In Real Life

A fun fact about Mayim Bialik from Big Bang Theory is the fact that she has a Ph.D. in neuroscience... in real life! On the show, all the main characters are extremely intelligent and their respective fields. It is super cool that she is genuinely intelligent in real life! She is probably the smartest person from the cast!

Related: 15 Sweet Photos Of The Big Bang Theory Cast Out Of Character

6 On '8 Simple Rules' Bridget's Nickname Is Beach Because That's Where She Was Conceived

On Eight Simple Rules, Kaley Cuoco played the ditzy character of Bridget. Bridget’s nickname on the show was “Beach“ because that is where she was conceived. It is pretty hilarious that her parents would jokingly call her that. It is also kind of gross and unsettling at the same time from a kid's perspective!