Peter Jackson at his goriest!!!
Not only the plot, which is a sort of mixture between Psycho, The Evil Dead and Re-Animator, is quite convincing and a rather nice persiflage of the named classics, but also the acting is good considering the type of film it is.
You should always go for the uncut version, otherwise you will miss some of the funniest scenes where the splatter effects are really that overexaggerated you will have a tummy ache for laughing so hard.
A great film, not only for fans of splatter films.
This might as well be the greatest splatter film ever made.