If you like watching sitcoms, you probably are familiar with "The Big Bang Theory" cast members. The show revolves around two physicists, a mechanical engineer and an astrophysicist. You've got it, a bunch of nerds. The four spend most of their time playing video games, reading comic books or watching sci-fi films. Things, however, change when a beautiful blonde aspiring actress moves in next door. She teaches these social inept scientist a thing or two about life and love. 

  1. Sheldon Cooper played by Jim Parson At the core of the show is Sheldon, a character that's rigid, unsociable and doesn't have a clue to life outside of science. Parson had moderate success before becoming a "Big Bang Theory" cast member when he played a role in the hit drama "Judging Amy." Parson is the only cast member whose won an Emmy and Golden Globe for his role in "The Big Bang Theory."

  2. Leonard Hofstadter played by Johnny Galecki Leonard is the most normal nerd of the group. In other words, he got to date the blonde aspiring actress for a short time. Galecki is best known for his role as David Healy in the hit series "Roseanne." He would go on to win Best Young Artist award for that role.

  3. Howard Wolowitz played by Simon Helberg Being a part of "The Big Bang Theory" cast is Helberg's greatest achievement to date. He's played in various guest roles in television and the movies, but never established a name for himself until this sitcom.

  4. Raj Koothrappali played by Kunal Nayyar Acting is new to Nayyar because he is a business major and mastered in fine arts. His part as a "The Big Bang Theory" cast member has put him on the star stratosphere map.

  5. Penny played by Kaley Cuoco She's the good looking blonde next door who wants to become an actress. Cuoco is not stranger to acting. She has been modeling and acting since the age of six. As the most prolific actor of "The Big Bang Theory" cast members, she's played in roles in shows like "Charmed," "6Teen" and "Monster Allergy." Cuoco's won Break Out Star Teen Choice Award. She also won an Ensemble Cast Award for her work in "Debating Robert Lee."