Have you ever found yourself watching a show only to be startled by the realisation a small part is played by someone really famous? Tap to play or pause GIF Tap to play or pause GIF jamesvandermemes.tumblr.com Maybe you spotted a celeb in one of their early, bit-part roles, like Shailene Woodley playing a young Kaitlin Cooper on The O.C. Fox Or maybe were you surprised to see someone in a one-off episode, like Ryan Reynolds appearing on The X Files? Fox Maybe it was someone who had a slightly bigger arc, like Anna Faris playing the birthmother of Monica and Chandler's kids on Friends. NBC Tell us who you've been surprised to see appearing in random TV shows in the comments below, and your submission could be featured in a future BuzzFeed Community post or video!