23 Famous People You Probably Didn't Know Were In That TV ShowSkip To ContentHomepageSign InSearch BuzzFeedSearch BuzzFeedlol Badge Feedwin Badge Feedtrending Badge FeedCalifornia residents can opt out of "sales" of personal data.Do Not Sell My Personal Information 2022 BuzzFeed, Inc PressRSSPrivacyConsent PreferencesUser TermsAd ChoicesHelpContactSitemapPosted on 14 Sept 2017 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?! by Jamie JonesBuzzFeed StaffFacebookPinterestTwitterMailLink 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 1 Shia LaBeouf in Freeks and Geeks Tap to play GIF Tap to play GIF Paramount Worldwide Episode: "We've Got Spirit" (season 1, episode 9) Role: A school mascot who gets injured. Suggested by wiktoriad44bb547be 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 3 Lin-Manuel Miranda in How I Met Your Mother Tap to play GIF Tap to play GIF 20th Television Episode: "Bedtime Stories" (season 9, episode 11) Role: A rapping bus passenger named Gus. Suggested by ashleyspears2018 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 Tap to play GIF Tap to play GIF 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 7 Amy Adams in Charmed CBS Television Episode: "Murphy's Luck" (season 2, episode 16) Role: Maggie Murphy, a woman cursed with bad luck. Suggested by rachelkoz 8 Justin Bieber in CSI Crime Scene Investigation Tap to play GIF Tap to play GIF 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 10 Paris Hilton in Supernatural Warner Bros. Television Episode: "Fallen Idols" (season 5, episode 5) Role: An Eastern European forest god disguised as Paris Hilton. Suggested by s4d2e0a9c5 11 Paris Hilton in The O C Warner Bros. Television Episode: The L.A. (season 1, episode 22) Role: Herself. She makes small talk with Seth about Thomas Pynchon. Suggested by xcansuk12 12 Patrick Stump from Fall Out Boy in House Tap to play GIF Tap to play GIF 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 13 Idris Elba in Absolutely Fabulous BBC Episode: "Sex" (season 3, episode 3) Role: Hilton, a male escort. Suggested by gracem42dccd98f 14 Chad Michaels in Jane the Virgin Tap to play GIF Tap to play GIF The CW Episode: "Chapter Twenty-Two" (season 1, episode 22) Role: Unsurprisingly, a Cher impersonator. Suggested by mayaa445bb877e 15 Quentin Tarantino in The Golden Girls Disney–ABC Episode: "Sophia's Wedding: Part 1" (season 4, episode 6) Role: An Elvis impersonator. Suggested by izzie14 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 17 Donald Trump in Sex and The City Tap to play GIF Tap to play GIF 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 18 Art Garfunkel in Arthur PBS Episode: "Buster's Back/The Ballad of Buster Baxter" (season 3, episode 1) Role: A guitar playing moose who narrates Buster's feelings. Suggested by magncheese97 19 Joe Biden in Parks and Recreation Tap to play GIF Tap to play GIF NBCUniversal Television Episode: "Leslie Vs. April" (season 5, episode 7) Role: Himself. Suggested by Mark Rayner, Facebook 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 Tap to play GIF Tap to play GIF 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 Want to be featured in similar BuzzFeed posts Make sure to follow the BuzzFeed Community on Facebook and Twitter Share This ArticleFacebook PinterestTwitterMailLink TV and MoviesGet all the best moments in pop culture & entertainment delivered to your inbox.This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.