I always liked the trailer's for the FNAF games. I think Cawthon does a very good job of building up the suspense and raising the viewer's curiosity for what's to come once the game is released. I think he does a good job with the music as well. This one seemed especially interesting and I really like the beginning of the trailer where the eyes just leave instead of what a trailer for a horror film would do, which is just throw a jump scare at you.
Foxy looks plain demonic though.