This weekend, I was just lying in bed eating leftovers and streaming the seventh episode of my Castle rewatch, when I spotted none other than Meghan Markle on my screen! ABC And wouldn't you know it, she turned out to be the killer!! Anyway, that got me thinking: What other shows have I seen with major stars in it before they were famous? Tap to play or pause GIF Tap to play or pause GIF Netflix I know Gina Rodriguez once starred in Happy Endings. ABC And Millie Bobby Brown was on Grey's Anatomy back in the day. ABC Not to mention, Lin-Manuel Miranda rapped on How I Met Your Mother once upon a time! Tap to play or pause GIF Tap to play or pause GIF CBS So which celeb TV cameos have you noticed?? Disney Yes, that is Dwayne "The Rock" Johnson on Hannah Montana. Tell us who you've been surprised to see in a TV show in the comments below, and your submission could be featured in a future BuzzFeed Community post or video!