The Boy was one, there is an interviews where the director goes on a rant about it claiming he felt like he was making the movie with both hands tied behind his back. He would have loved to make the intense film that was planned but it wasn't to be.
The director of The Final Girls said he was furious at being forced into a PG13 (was originally supposed to be a very hard R) and fought tooth and nail with everyone in order to keep it R rated.