Ah, music videos. They're basically the equivalent of reading a book and seeing the film adaptation. You listen to a song and think, "What ~interesting~ images will I be presented with this time?"
But, every once in a while, you'll watch a music video and see someone who looks kind of familiar and, after frantically Googling, discover that that's actually Saoirse Ronan in Ed Sheeran's "Galway Girl"...or whoever it turned out to be.
So, we want to know. What are some of your favorite celebrity music video cameos and how'd you react when you spotted them?
Did you get your life to Serena Williams dancing in Bey's music video for "Sorry"?
Were you shocked, or smitten, when Alexander Skarsgård showed up as a sexy one-eyed pirate in Lady Gaga's "Paparazzi"?
Or, could you just not for the life of you get the image of Danny Devito and Harry Styles dancing in 1D's "Steal My Girl" out of your head?
It can be a #tbt, like Jerry O'Connell in Mariah Carey's "Heartbreaker"...
...or something more recent like Childish Gambino in SZA's "Garden (Say It Like Dat)."
Whatever it is, we want to know! Tell us your fave music video cameos and how you feel about them. Submit your response below and it may be featured in a BuzzFeed Community post and/or video!