BySarah O'Connell, writer at

It all started with the Big Bang - or did it? Fans of Emmy-winning sitcom The Big Bang Theory have come to love the series characters Penny, Leonard, and Sheldon, but they - and the rest of gang - were working hard in Hollywood long before they all moved to Pasadena, California.

Take a look at The Big Bang Theory cast in some of their earlier roles:

Jim Parsons

Sheldon wasn't the only eccentric role in Parsons's acting career. In Zach Braff's feature film directorial debut, Garden State, he played Tim, a Medieval Times employee who could speak Klingon. Before that he appeared as an eager-to-please court clerk in the final season of the legal drama Judging Amy.

Kaley Cuoco

You probably remember Kaley Cuoco as Bridget Hennessy in the John Ritter sitcom 8 Simple Rules, but the young starlet also appeared as Brady Bunch actress Maureen McCormick in the 2000 TV movie Growing Up Brady, and also as a young Angela Chase, in My So-Called Life.

Turns out Cuoco has always been a little minx...

Johnny Galecki

Once upon a time, before Leonard Hofstadter was born, Johnny Galecki played David Healy, the softly spoken boyfriend of Darlene on the hit TV show Roseanne. Galecki then appeared in several films, including I Know What You Did Last Summer, Bounce and Vanilla Sky before finally finding his inner geek on The Big Bang Theory.

It's hard to believe that this is nerdy little Leonard...

Simon Helberg

Ladies man Howard was hard at work in Hollywood prior to landing a role on The Big Bang Theory. Helberg played small roles in Van Wilder, A Cinderella Story, and Good Night, and Good Luck, as well as appearing on MADtv and the short-lived sitcom Studio 60 on the Sunset Strip

Who know Helberg was a Tom Cruise impressionist...

Kunal Nayyar

Before landing the role of astrophysicist Raj, Nayyar had only two screen credits for roles in S.C.I.E.N.C.E. and one episode of NCIS. Apart from that, he worked mostly in the theatre, performing with the Royal Shakespeare Company in Stratford-upon-Avon, England, and the American Shakespeare Theatre Company in Washington.

Sources: US Magazine, Giphy.


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