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19 Very Famous Celebrities Who Appeared In Random TV Shows And Movies Early In Their Careers

Before he was Thor, Chris Hemsworth was a god on the dance floor on Dancing With the Stars.

1. Kaley Cuoco played Maureen McCormick (who played Marcia Brady) opposite Adam Brody, the actor who played Barry Willams (who played Greg Brady), in the 2000 TV movie Growing Up Brady.

A photo of Adam Brody and Kaley Cuoco dressed up as Greg and Marcia Brady

2. Jurnee Smollett was a recurring character for two seasons (1992–94) on Full House, playing Michelle's BFF Denise.

Lori Loughlin, Jurnee Smollett, and Mary-Kate Olsen sitting on couch in the "Full House" living room

3. Jennifer Lopez was a backup dancer in the 1993 music video for Janet Jackson's "That's the Way Love Goes."

4. In 1987, one of Brad Pitts's first roles was on the popular nighttime soap Dallas, where in four episodes he played Randy, the boyfriend of one of the show's characters.

Screenshot from "Dallas" of Brad Pitt next to a blonde actress in front of a staircase

5. Halle Berry's very first role was on a 1989 sitcom called Living Dolls, which was a spinoff of Who's the Boss. The show also starred Leah Remini.

A promotional photo of the cast of "Living Dolls"

6. In 2013, Zendaya participated in the 16th season of Dancing With the Stars. She finished the competition as a runner-up.

Valentin Chmerkovskiy and Zendaya hugging while receiving their scores

7. In 2006, Chris Hemsworth participated in the fifth season of the Australian version of Dancing With the Stars. He was the sixth contestant eliminated.

8. Viola Davis had a small role playing a cop in the 2001 rom-com Kate & Leopold (in case you forgot, that was the movie where Hugh Jackman time-travels from the 1800s and falls in love with Meg Ryan's character).

Viola Davis dressed up like a New York City cop

9. Miley Cyrus had a tiny role as Ruthie in Tim Burton's 2003 film, Big Fish.

Miley Cyrus surround by other kids in the dark

10. In 1990, Leonardo DiCaprio was part of the cast of Parenthood — which was based on the 1989 movie of the same name — playing the character of Garry (who was actually played by Joaquin Phoenix in the film).

Cast photo of 1990's Parenthood

11. One of Taraji P. Henson's very first roles was in a 1997 episode of Sister, Sister.

Taraji in a lime green turtle neck sitting on the floor in front of a bed with someone sitting behind her

12. In 1990, Jennifer Aniston played Jeannie Bueller in Ferris Bueller, which was a TV adaptation of the 1986 film Ferris Bueller's Day Off.

Jennifer Aniston as Jeannie Bueller, Charlie Schlatter as Ferris Bueller, Ami Dolenz as Sloan Peterson sitting on a white limo

13. In 1999, Pedro Pascal appeared on the first episode of Season 4 of Buffy the Vampire Slayer — as Buffy's fellow freshman who would end up being turned into a vampire.

Screenshot Pedro Pascal talking to Sarah Michelle Gellar in a outside nighttime scene.

14. Jake Gyllenhaal played Robin Williams' son in a 1994 episode of the police procedural drama Homicide: Life on the Street.

Screenshot of Jake sleeping on Robin Willams' shoulder

15. Kevin Hart played the recurring character Luke in Judd Apatow's 2001 sitcom, Undeclared.

Kevin Hart in a sweater vest holding a tall woman's hand on a college campus

16. One of Julia Roberts's first roles was on an episode of Miami Vice in 1988.

A photo of Julia Roberts talking Don Johnson on the set of Miami Vice

17. George Clooney played a detective on an episode of The Golden Girls in 1987.

George Clooney laying in a hospital bed surround by Estelle Getty, Betty White, and Rue McClanahan

18. In 2004, Emma Stone participated in an American Idol–style competition show on VH1 called In Search of the New Partridge Family. And she actually won — she was named the new "Laurie Partridge."

Emma Stone singing on a stage with a pink background behind her.

19. And finally, The Rock played his own dad, Rocky Johnson, on an episode of That '70s Show in 1999.

Topher Grace next to The Rock dressed up like his own dad