It's like a modern day Frankenstein tale made all the more realistic by Angela Bettis' INCREDIBLE performance. Everything she does here is believable. Even though May goes into slasher territory halfway through, Bettis doesn't make her titular character one of those immortal masked murderers. She's just a lonely, deeply disturbed woman trying to make a friend.
Lucky McKee's directional debut is unforgettable. It's a dark, creepy, highly original horror movie with frightening imagery and one of the best final shots I've seen in a movie.