The Room
You can't make a good-bad movie list without including The Room, which is often credited as being the worst movie ever made. Directed by Tommy Wiseau, this film takes bad acting to a new low, budget cuts to a new high, and audiences more confused than ever before. It's so bad that's it's great!
Spice World
Spice up your life with the 1998 classic starring pop girl group the Spice Girls! Though it tanked with critics and currently holds 35% on Rotten Tomatoes, the fun of this movie was seeing these singers turn into actors. That's probably how it managed to generate $151 million at the box office and $100 million in home video sales.