Two problems I have with this movie (MAJOR SPOILER)
1.Lack of explanation. I can enjoy a good supernatural horror movie as much as the next person, but for me I need some reason for how and why it's happening. Example: CHILD'S PLAY, where the killer is able to transplant his soul into a doll because he practices voodoo. Or THE EVIL DEAD, where demons enter our world because certain passeges from a mystical book are read out loud. In cases such as this I can suspend my disbelief and accept what I'm seeing on screen. In this movie, however, a guy's hand gets severed in an accident, then suddenly comes to life and starts killing people, "just because." And...that's it?
2.The ending. The hand kills the doctor in the hospital, the guy starts laughing evilly...and then the movie ends. Or, rather, just stops. What happens next? Does the hand kill him? Does the guy and his hand then go on a killing spree together? What happens next?