I had "The Janitor" recommended to me by two friends, and when a time came where the opportunity presented itself, I jumped on it like a loaded hand grenade. Best decision I could possibly make. There is a fine line between "good bad horror films" and "bad bad horror films" (see also my review for "Andre the Butcher") and this one stays safely on the "good" side.
The plot is this: a janitor is sick of being looked down on and kills as many people in his office building and at a sorority that he can in the time given him.
This film is not going to be something called a masterpiece. The acting is campy, the characters are caricatures, and if it cost more than twenty dollars to film this I would be surprised. But they make it work. Those with a sick sense of humor will love the non-stop jokes about STDs and semen. And the violence and gore is about the best you will find in a horror film, mainstream or otherwise. Star / writer / director Andy Signore seems to have learned a lot from Troma's Lloyd Kaufman (who appears in this film as a bum).
There's also a difference between good horror nudity and bad horror nudity. Some films throw topless women in the mix simply because they can, and others will do so in a way that is completely unattractive (see again "Andre the Butcher"). The Janitor has some excessive nudity, but it seems necessary and very "hot" which complements the gore aspects well. (I say "necessary" because the characters who get nude are written to build up to these things, unlike other films that have nude women show up without explanation.) Oh, and if you like the nude scenes, check out the Easter Eggs on the DVD. Well worth it.
Okay; campiness, humor, nudity, gore. What am I missing? Ah, yes, the music video on the DVD. This is also a must-see. The star not only wrote and directed, he also sings on the soundtrack and has made a great music video called "You're Gonna Die" which fits the theme of the film well and teaches you to respect your cleaning staff.
Rent this film. Buy this film. If you do not like it, I cannot offer you a refund -- but you will never have to trust another horror movie review from me again.