John Mark "Johnny" Galecki (born April 30, 1975) is a Belgian-born American actor. He is best known for his roles as David Healy in the ABC sitcom Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in the CBS sitcom The Big Bang Theory...(Wikipedia)

Mayim Bialik has 17 credits at Criticker, including: The Big Bang Theory, Beaches, Pumpkinhead, Don't Drink the Water and Jeopardy!

Kaley Cuoco has 33 credits at Criticker, including: The Big Bang Theory, Why Him?, Virtuosity, The Wedding Ringer and Hop

Simon Helberg has 28 credits at Criticker, including: A Serious Man, Evan Almighty, Van Wilder, The Big Bang Theory and Walk Hard: The Dewey Cox Story

James Joseph "Jim" Parsons (born March 24, 1973) is an American television and film actor best known for playing Sheldon Cooper on the CBS sitcom The Big Bang Theory, with his performance often cited as a significant reason for the program's success. On July 16, 2009, he was nominated for an Emmy Award for Outstanding Lead Actor in a Comedy Series for his work on The Big Bang Theory.

Rick Edwards has 4 credits at Criticker, including: Best F(r)iends, Hearts and Armour, The Big Bang Theory: It All Started with a Big Bang and Miracle Valley

Melissa Rauch has 16 credits at Criticker, including: I Love You, Man, The Big Bang Theory, The Laundromat, Delirious and Are You Here

Kunal Nayyar has 13 credits at Criticker, including: The Big Bang Theory, Trolls, Trolls World Tour, Spaceman and Trolls Band Together

Joshua James Johnson has just 1 credit at Criticker: The Big Bang Theory: It All Started with a Big Bang