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    31 Celebrities You Never Realized Voiced Famous Cartoons

    How did I not realize Mel Gibson was John Smith.

    1. Tony Goldwyn aka the president from Scandal, voiced Tarzan in Tarzan.

    Angela Weiss / AFP / Getty Images, Disney

    2. And Glenn Close was Kala.

    Daniele Venturelli / WireImage, Disney

    3. Fergie was the voice of Sally Brown.

    Valerie Macon / AFP / Getty Images, Charlie Brown

    4. The voice of Lilo is the girl from The Ring.

    Disney

    5. Mel Gibson was the voice of John Smith in Pocahontas .

    Karwai Tang / WireImage, Disney

    6. Whoopi Goldberg voiced Shenzi the hyena from The Lion King.

    Monica Schipper / Getty Images, Disney

    7. The guy who voiced Optimus Prime is ALSO Eeyore.

    Whoa.

    8. Val Kilmer was Moses in Prince Of Egypt.

    Jason Laveris / FilmMagic, Disney

    9. Bruce Willis was Spike in Rugrats.

    Dia Dipasupil / WireImage, Cartoon Network

    10. Patton Oswalt voiced Remy in Ratatouille.

    Monica Schipper / Getty Images

    11. Jessica Walter was the voice of Fran Sinclair on Dinosaurs

    Paul Butterfield / Getty Images

    12. Oh and Grover = Yoda. They are both voiced by Frank Oz.

    Disney

    13. Tim Curry voiced Nigel Thornberry in The Wild Thornberrys.

    Stephen Lovekin / Getty, Nickelodeon

    14. And Lacey Chabert voiced Eliza Thornbery.

    Paul Archuleta / Getty Images, Nickelodeon

    15. Alexander Gould (aka Shane Botwin) voiced Nemo in Finding Nemo.

    David Livingston / Getty, Disney

    16. Robert Downey Jr. was Patrick Pewterschmidt in Family Guy.

    Jason Merritt / Getty, Fox

    17. Carlos Alazraqui was the voice of Rocko.

    Comedy Central, Nickelodeon

    18. Justin Timberlake was the guy who said "I'm lovin' it" in the McDonald's commercials.

    Jamie McCarthy / Getty, McCDonalds

    Not a cartoon, but YOU GET IT.

    19. Dustin Hoffman was Benedict Arnold in Liberty's Kids.

    20. George Clooney was Dr. Doctor in South Park.

    Frederick M. Brown / Getty Images, Comedy Central

    21. Stephen Colbert and Steve Carell were the Ambiguously Gay Duo .

    Cbs Photo Archive / Getty Images, NBC/SNL

    22. Meg Ryan was Dr. Blight on Captain Planet and the Planeteers

    Pier Marco Tacca / Getty Images, TBS

    23. Michael Cera was the voice of Brother Bear on The Barenstein Bears.

    Bruce Glikas / Bruce Glikas / FilmMagic

    24. Johnny Cash was the space coyote in The Simpsons

    Abc Television / Getty Images, Fox

    The Simpsons

    25. Captain Hadley from The Shawshank Redemption is also Mr. Krabs.

    Nickelodeon

    26. Busta Rhymes voiced Reptar in The Rugrats Movie.

    Sean Zanni / Patrick McMullan via Getty Image, NIckelodeon

    27. Haley Joel Osment was Chip.

    George Pimentel / Getty Images, Disney

    28. Tate Donovan (aka Jimmy Cooper) was Hercules.

    Theo Wargo / Getty Images, Disney

    29. Matt Damon voiced Cale Tucker in Titan A.E. .

    Axelle / FilmMagic

    30. Mark Hamill was the voice of Moth in Spongebob AND Grubby in Hey Arnold!

    John Shearer / Getty Images, Nickelodeon, Nickeloden

    31. And let's not forget:

    Cartoon Network

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