Escape from Tomorrow
Filmed at Disney World without permission, it exposed what really happens behind the scenes at the theme park including manufactured corporate happiness and the trouble with having to be happy all the time. Again, this was filmed guerilla-style at Disney. They had no idea it was being filmed under their nose. Sundance loves it.
If you grew up with Saved By the Bell, Elizabeth Berkeley played a feminist hero to young girls. She went from that to a big screen stripper pole.
Live action mixed with animation mixed with romance, violence and death. You'll never look at a cartoon the same again.
What movie messed up your childhood?