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23 Famous People You Probably Didn't Know Were In That TV Show

What was the lead singer of Fall Out Boy doing on House?!

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We recently asked members of the BuzzFeed Community who they've been surprised to see make an appearance on a TV show. Here are the most shocking responses.

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2. Neil Patrick Harris in Murder, She Wrote

NBCUniversal Television

Episode: "Lone Witness" (season, episode 19)

Role: A delivery boy accused of murder.

Suggested by Elisa Mascellani, Facebook

4. Leslie Odom Jr. in Gilmore Girls

Warner Bros. Television

Episode: "Bridesmaids Revisited" (season 6, episode 16)

Role: Quentin Walsh, the editor of the Daily Princetonian.

Suggested by Anna Inkle, Facebook

5. Billie Joe Armstrong (From Green Day) in Nurse Jackie

Showtime

Episode: "Kettle-Kettle-Black-Black" (season 4, episode 1)

Role: A crack addict Jackie meets at a church who ends up dying on her living room floor.

Suggested by fondrenn

6. Don Cheadle in The Fresh Prince of Bel-Air

Warner Bros. Television

Episode: "Homeboy, Sweet Homeboy" (season 1, episode 5)

Role: Ice Tray, an old friend of Will's from back in Philadelphia.

Suggested by sgee

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8. Justin Bieber in CSI: Crime Scene Investigation

CBS Television

Episode: "Shock Waves" (season 11, episode 1) and "Targets of Obsession" (season 11, episode 15)

Role: A serial killer and bomber responsible for at least five deaths.

Suggested by hbdancer77

9. Adam Levine (from Maroon 5) in American Horror Story: Asylum

20th Television

Episode: "Welcome to Briarcliff" (season 2, episode 1)

Role: A honeymooner who gets his arm ripped off in the opening scene.

Suggested by molix

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12. Patrick Stump (from Fall Out Boy) in House

NBCUniversal

Episode: "We Need the Eggs" (season 8, episode 17)

Role: A young hospital employee who knows how to handle a guitar.

Suggested by sandi62197

16. Seth MacFarlane in Gilmore Girls

Warner Bros. Television

Episode: "Lorelai's Graduation Day" (season 2, episode 21)

Role: A classmate of Lorelai at Hartford Business College.

Suggested by shortyxo

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17. Donald Trump in Sex and The City

Warner Bros. Television

Episode: "The Man, the Myth, the Viagra" (season 2, episode 8)

Role: Himself, but chatting to an old man Samantha hooks up with.

Suggested by harah2

20. Billy Bob Thorton in The Big Bang Theory

Warner Bros. Television

Episode: "The Misinterpretation Agitation" (season 8, episode 7)

Role: Dr. Lorvis, a colleague of Penny's who becomes infatuated with her.

Suggested by Jarrod Verderber, Facebook

21. Jack Black in The X-Files

20th Television

Episode: "D.P.O." (season 3, episode 3)

Role: An arcade owner who gets killed by a lighting strike.

Suggested by Kaitlin Bradshaw, Facebook

22. Stephen King in Sons of Anarchy

20th Television

Episode: "Caregiver" (season 3, episode 3)

Role: A 'cleaner' hired to dispose of a body.

Suggested by Kaitlin Bradshaw, Facebook

23. Jennifer Lawrence in Monk

NBCUniversal

Episode: "Mr. Monk and the Big Game" (season 5, episode 3)

Role: A basketball mascot, dressed as a lion.

Suggested by Val South, Facebook

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