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    42 Actors You Probably Never Knew Were In That Thing

    Wait, Seth Rogen was in Donnie Darko? Whaaaaat?

    We recently asked members of the BuzzFeed Community which actors they've been surprised to learn were in certain movies. Here are the best responses that will make you go, "Whoa, I did not realise that!"

    1. Stanley Tucci in Beethoven (1992)

    Angela Weiss / AFP / Getty Images
    Universal Studios

    "I watched that movie a lot as a kid and then largely forgot about it until I had to babysit my cousin's son. He wanted to watch that, I figured it was better than Spongebob for the third time, and HOLY CRAP Stanley Tucci!!" –Mye Logan, Facebook

    2. Jessica Alba in Camp Nowhere (1994)

    Mike Coppola / Getty Images
    Buena Vista Pictures

    3. Donnie Wahlberg in The Sixth Sense (1999)

    Cindy Ord / Getty Images
    Buena Vista Pictures

    "His name was included in the opening credits, but then I didn't see him anywhere in the movie. It wasn't until the very end that I realized he was the scary-skinny, terrified man in the opening scenes. I did not recognize him at ALL." –tomkat41

    4. Robin Wright in Forrest Gump (1994) and The Princess Bride (1987)

    Mark Davis / Getty Images
    Paramount Pictures
    20th Century Fox

    "Embarrassed to admit it took 1.5 seasons of watching House of Cards to realize that Claire Underwood is actually Jenny from Forrest Gump – a movie I've watched countless times growing up." –Nikolina Burazer, Facebook.

    "And more importantly, Princess Buttercup in The Princess Bride." –Chris Tucker, Facebook

    5. Lena Headey (Cersei in Game of Thrones) in St Trinian's (2007)

    Alberto E. Rodriguez / Getty Images
    Entertainment Film Distributors

    "St Trinian's was on the TV the other day, and only when the credits rolled did we discover that the awkward, twittery teacher is LENA BLOODY HEADEY. As in, Cersei Lannister. I didn't even recognise her!" –Stephanie Wright, Facebook

    6. Also Lena Headey in The Jungle Book (1994)

    Alberto E. Rodriguez / Getty Images
    Buena Vista Pictures

    "One that got me and my sister was that Lena Headey (Cersei from Game of Thrones) was Kitty from The Jungle Book (1994)." –Ria Parton, Facebook

    7. Mila Kunis (as a young Angelina Jolie) in Gia (1998)

    Alberto E. Rodriguez / Getty Images

    –James Soares, Facebook

    8. Kirsten Dunst in Jumanji (1995)

    Angela Weiss / AFP/Getty Images
    Columbia TriStar

    "I always knew she looked familiar but it took me forever to realise who she was." –lucyjane182

    9. Jake Gyllenhaal in City Slickers (1991)

    Angela Weiss / AFP / Getty Images
    Columbia Pictures

    10. Glenn Close in Hook (1991)

    Brad Barket / Getty Images
    TriStar Pictures

    "Glenn Close in Hook totally blew my mind – watched it my whole life before finding this out as an adult!" –Sarah Purser, Facebook

    11. Also Kelly Rowan in Hook (1991)

    Joshua Blanchard / Getty Images
    TriStar Pictures

    "Kirsten Cohen (Kelly Rowan) from The O.C. was in Hook (very briefly as Peter's mother)." –Sarah Whitlock, Facebook

    12. Liam Cunningham in A Little Princess (1995)

    Carlos Alvarez / Getty Images
    Warner Bros.

    "Liam Cunningham, Captain Crewe in A Little Princess went on to co-star in Game of Thrones as Davos Seaworth. My jaw pretty much hit the ground. He looks so different!" –Becky Martin, Facebook

    13. Anthony Head in Sweeney Todd: The Demon Barber of Fleet Street (2007)

    Jeff Spicer / Getty Images

    "Anthony Head is in Sweeney Todd for five seconds. After the Pirelli v. Sweeney showdown, he approaches Sweeney and asks if he has his own establishment. Literally has just one line, no name, and is never seen again." –Lucy Anne, Facebook

    14. Miley Cyrus in Big Fish (2003)

    Rob Kim / Getty Images
    Columbia Pictures

    "Miley Cyrus was in Big Fish as a girl behind bushes with a crowd of kids. In the credits, her name is Destiny Cyrus." –Melissa Taylor, Facebook

    15. Tom Felton in The Borrowers (1997)

    John Phillips / Getty Images
    Working Title Films

    "Tom Felton was (Peagreen) in The Borrowers. Was severely shook when I realised that." –Phoenix Heron, Facebook

    16. Justin Theroux in Romy and Michele's High School Reunion (1997)

    Angela Weiss / AFP / Getty Images
    Touchstone Pictures

    "Justin Theroux is the hot stuttering cowboy in Romy and Michele's High School Reunion. I could not believe it. I had to check IMDb while watching it." –Megan Linnea Grable, Facebook

    17. Taryn Manning and Zoe Saldana in Crossroads (2002)

    Frazer Harrison / Getty Images
    Getty Images
    Paramount Pictures

    "Crossroads. As in, the Britney Spears movie. Hello Zoe Saldana and Pennsatucky from Orange Is the New Black! Taryn Manning is so good at lovable ragamuffins." –Stephanie Wright, Facebook

    18. Christian Bale in Mio in the Land of Faraway (1987)

    Chris Delmas / AFP / Getty Images
    Miramax Films

    "I even watched it when I was older and said, 'Hey, that kid looks a lot like Christian Bale,' and thought nothing of it." –Jamie Wenner, Facebook

    19. He was also in Little Women (1994)

    Columbia Pictures

    20. Brie Larson and Ashley Benson in 13 Going On 30 (2004)

    Jesse Grant / Getty Images
    Getty Images
    Columbia Pictures

    "Brie Larson in 13 Going on 30! I rewatched it the other day and had a bit of a freakout moment! She was also in Sleepover with a very young Evan Peters!" –kerrygill95

    21. Taylor Momsen in How the Grinch Stole Christmas (2000)

    Kenzo Tribouillard / AFP / Getty Images
    Universal Pictures,

    "Taylor Momsen played Cindy Lou Who in How the Grinch Stole Christmas before starring as Jenny in Gossip Girl!" –larueisabella

    22. Seth Rogen in Donnie Darko (2001)

    Suzanne Cordeiro / AFP / Getty Images
    Newmarket Films

    "I love that movie and after a recent rewatch I was like, 'Holy crap, that's Seth Rogen!'" –Ryan Morris, Facebook

    23. Angela Lansbury in Gaslight (1944)

    Matt Winkelmeyer / Getty Images

    "A 17-year-old Angela Lansbury film Gaslight (a classic, you should all watch it)! I find it crazy to see Jessica Fletcher/Mrs. Potts as a girl and yet somehow looking almost exactly the same." –Rebecca Ross, Facebook

    24. Chris Messina in You've Got Mail (1998)

    Ben Gabbe / Getty Images
    Warner Bros.

    "In the scene where Meg Ryan visits Fox Books for the first time, he played the clueless salesperson." –Janhavi Deshpande, Facebook

    25. Ryan Gosling in Remember the Titans (2000)

    Suzanne Cordeiro / AFP / Getty Images
    Buena Vista Pictures

    "Ryan Gosling is one of the supporting football players in Remember the Titans. I realised that on my 5,196th viewing of that movie, told my family members who were watching it with me, and we all freaked out." –Mary Grace Buckley, Facebook

    26. Angela Bassett in Kindergarten Cop (1990)

    Jonathan Leibson / Getty Images
    Universal Pictures

    "Angela Bassett as a freakin' flight attendant in Kindergarten Cop!" –Allyson Guy, Facebook

    27. Kelly Bishop in Dirty Dancing (1987)

    Alberto E. Rodriguez / Getty Images
    Distributed by Vestron Pictures

    "Emily Gilmore (Kelly Bishop) in Gilmore Girls was in Dirty Dancing." –Sarah Whitlock, Facebook

    28. Jack Black in Dead Man Walking (1995)

    Nicholas Hunt / Getty Images
    Gramercy Pictures

    "He plays Sean Penn's younger brother." –Marie Suzanne Todd, Facebook

    29. Chandra Wilson in Philadelphia (1993)

    Tommaso Boddi / AFP / Getty Images
    TriStar Pictures

    "Chandra Wilson (i.e. Grey's Anatomy's very own Miranda Bailey!!) in the tearjerker Philadelphia!" –Rossi Redgrave, Facebook

    30. Abigail Breslin in The Princess Diaries 2: Royal Engagement (2004)

    Frazer Harrison / Getty Images
    Buena Vista Pictures

    "Abigail Breslin as the little orphan girl in Princess Diaries 2." –Kirsty L. Powell, Facebook

    31. Bryan Cranston in That Thing You Do! (1996)

    Alberto E. Rodriguez / Getty Images
    20th Century Fox

    –Vivian Le, Facebook

    32. Julianna Hough in Harry Potter (2001)

    Angela Weiss / AFP / Getty Images
    Warner Bros. Pictures

    "Julianne Hough in Harry Potter always freaks me out." –Chandler Nash, Facebook

    33. John Krasinski in The Holiday (2006)

    Alberto E. Rodriguez / Getty Images
    Universal Pictures

    –Janae Mancheski, Facebook

    34. Cate Blanchett in Hot Fuzz (2007)

    Rob Kim / Getty Images
    Universal Pictures

    35. Ben Affleck in the Buffy the Vampire Slayer movie (1992)

    Pascal Le Segretain / Getty Images
    20th Century Fox

    –Angela Wiltsie, Facebook

    36. Steve Carell in Curly Sue (1991)

    Jason Merritt / Getty Images
    Warner Bros.

    "Steve Carrell as a waiter in Curly Sue!" –Kailani Torres, Facebook

    37. Viola Davis in Kate & Leopold (2001)

    Angela Weiss / AFP / Getty Images
    Miramax Films

    38. Lino Facioli (Robyn Arryn in Game of Thrones) in Get Him to the Greek (2010)

    Universal Pictures

    "Lino Facioli, who plays Robyn Arryn on Game of Thrones, plays Russell Brand's kid in Get Him to the Greek." –insomniamama

    39. Joe Manganiello in Spider-Man (2002)

    Angela Weiss / AFP / Getty Images
    Columbia Pictures

    40. Natalia Dyer (Nancy in Stranger Things) in Hannah Montana: The Movie (2009)

    Frazer Harrison / Getty Images


    41. Emmy Rossum in Songcatcher (2000)

    Dimitrios Kambouris / Getty Images

    42. Tobey Maguire in The Wizard (1989)

    Jemal Countess / Getty Images
    Universal Pictures

    "Tobey Maguire was in this bitchin' 1989 movie called The Wizard that was basically just a giant promotion for Super Mario Bros 3. Oh, and he had an amazing mullet." –punchandpie

    If you want to be featured in future BuzzFeed posts, make sure to follow the BuzzFeed Community on Facebook and Twitter.


    An earlier version of this post had a picture of Caroline Goodall as Peter's mother in Hook rather than Kelly Rowan. This has now been replaced with a correct picture. She really was in it for a snapshot so apologies for this error!