Game of Thrones, The O.C. Mash-Up: Shot Through the Heart!
If you haven't seen, Game of Thrones season 4, episode 9, then consider this your spoiler alert. The epic hour-long battle at the wall shocked fans with a confrontation between Jon Snow and Ygritte, during which the redheaded wildling took an arrow through the chest.
If you haven't finished watching the second season of The O.C., Marissa shot Trey Atwood in the finale. You get no spoiler alert because, c'mon...that was ten years ago.