Sarah Michelle Gellar and Freddie Prinze Jr.
Characters: Daphne and Fred
Movie: Scooby-Doo (2002), Scooby-Doo 2: Monsters Unleashed (2004)
It's a little annoying when two people who both have such long names decide to get together. Though husband and wife Freddie Prinze Jr. and Sarah Michelle Gellar met and began dating on the set of I Know What You Did Last Summer, it wasn't until their 2002 movie, Scooby-Doo, that they played a couple. In contrast to their first film together, Scooby-Doo is all fun and games, with a light-hearted mystery plot directed at kids and tweens.