The Big Bang Theory

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Jim Parsons Jim Parsons

Jim Parsons

Sheldon Cooper

Jim Parsons has appeared on the big screen in "School for Scoundrels" and "Heights." He has also played pivotal roles in several independent films, including "Garden State," "Gardener of Eden" and "The Great New Wonderful." Parsons' other television credits include recurring roles in the series "Judging Amy" and "Ed."

Johnny Galecki Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Before starring in "The Big Bang Theory," Johnny Galecki was best known to television audiences for his role as David in the long-running comedy series "Roseanne" for which he won a Young Artist Award. His other television series credits also include a recurring role in "My Boys" and guest appearances in "My Name Is Earl." Galecki's feature film credits include "Hancock" opposite Will Smith, Charlize Theron and Jason Bateman, "Crystal," "Bookies," "Vanilla Sky," "Bounce," "Playing Mona Lisa," "The Opposite of Sex," "I Know What You Did Last Summer," "Suicide Kings" and "National Lampoon's Christmas Vacation."

Kaley Cuoco Kaley Cuoco

Kaley Cuoco


Prior to "The Big Bang Theory," Kaley Cuoco was best known to television audiences for her role as Bridget Hennessy in the series "8 Simple Rules." She won a Teen Choice Award for her role and was featured in TV Guide's "Generation Now" and Vanity Fair's "Teenage It" lists.

Kunal Nayyar Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Kunal Nayyar's role in "The Big Bang Theory" is his first as a regular on a television series. He had a guest starring role on NCIS. Nayyar is writing his first feature film and his critically acclaimed play, "Cotton Candy," continues to run in New Delhi.

Simon Helberg Simon Helberg

Simon Helberg

Howard Wolowitz

Simon Helberg's television credits include guest starring appearances in "MAD TV," "Reno 911," "Joey" and "Studio 60 on the Sunset Strip." His feature film credits include "Van Wilder," "Old School," "Good Night, and Good Luck" and "For Your Consideration."

Mayim Bialik Mayim Bialik

Mayim Bialik

Amy Farrah Fowler

Mayim Bialik began her successful acting career as a child and is best known for her lead role as Blossom Russo in the early-1990’s sitcom, “Blossom.” Throughout the 1980s and 1990s, she made guest appearances on some of television's most beloved shows, including “Murphy Brown," “MacGyver,” “Webster” and “The Facts of Life.” More recently, she appeared in the television series “Fat Actress” and “Curb Your Enthusiasm.” Bialik’s other television credits include recurring roles on “The Secret Life of the American Teenager” and “’Til Death.”

Melissa Rauch Melissa Rauch

Melissa Rauch

Bernadette Rostenkowski-Wolowitz

Melissa Rauch's television career spans such hit shows as "True Blood" and "The Office" as well as "Kath & Kim," "Dirty Sexy Money" and "Best Week Ever." Among her feature film credits are roles in "I Love You Man" and "Delirious."

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