13 Celebrities Who Have Played Themselves On-Screen

It's not strange to have actors guest star as themselves in bit roles on television or in films.

Shows like "Curb Your Enthusiasm" and "Extras" have given celebrities like Kate Winslet and Daniel Radcliffe opportunities to mock their more serious public personas.

And films do it too, with Chuck Norris playing a blink-and-you'll-miss-it part in "Dodgeball: A True Underdog Story" or Topher Grace really hamming it up in "Oceans' 11" and "Oceans' 12."

And former "Dawson Creek" star James Van Beek is currently trying to make it a weekly joke on the new series "Don't Trust The B– In Apartment 23." 

The actor plays the titular B–'s friend who really milks his celebrity for all its worth. He even tries (successfully) to get girls by playing "I Don't Want To Wait" and wearing his iconic flannel shirts. 

So far, the joke is working: the show has retained it's decent numbers from the pilot. 

Now, here are 12 other celebrities who have made fun of themselves ... by playing themselves.

Paul Giamatti has a trouble with his soul.

Oscar nominee Paul Giamatti can't seem to separate the characters he plays with himself.

In the film "Cold Souls," the actor reads about "soul storage" and decides to lock away 95 percent of his soul so that he can properly play the main role in "Uncle Vanya". 

And it only gets weirder from there. 

Bruce Willis has a fit in "What Just Happened?" and plays a doting friend in "Oceans' 12."

Bruce Willis seems to be excellent at playing completely strange or jerk-y versions of himself. 

In the comedy "What Just Happened?" Willis throws a temper tantrum about not being recognizable to the younger generation.

In "Oceans' 12" Willis shows up when Tess (Julia Roberts) decides to pose as a pregnant Julia Roberts to try and steal something for the Ocean gang. It's very surreal. 

Check out Willis' rant in "What Just Happened?"

Neil Patrick Harris plays completely against type in the "Harold & Kumar" series.

Neil Patrick Harris is nothing like this in real life. We hope. 

In "Harold & Kumar Go To White Castle," Harold (John Cho) and Kumar (Kal Penn) pick up a hitchhiker that happens to be "Doogie Howser MD" star Harris. They tell the actor about their plan to get White Castle burgers but Harris has something more extreme in mind. 

Harris shows up in the next two "Harold and Kumar" movies again and this time, he makes jokes about being gay in real life.

Check out NPH in all his coked up, NSFW glory from the first "Harold and Kumar" film here.  

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