I'm a pretty huge slasher fan.
Student Bodies is quite entertaining and way ahead of its time.
The genre has those immovable mountains (Halloween, Friday the 13th, Nightmare on Elm Street, Texas Chainsaw Massacre, Child's Play etc.) which are all great in their own right. Smaller films I really dig are The Sleepaway Camp series, Prom Night, the original My Bloody Valentine, Silent Night Deadly Night, or something like Night of the Demon, which had a slasher-meets-supernatural sort of structure.
My favorite bottom of the barrel slasher was one called "Hide and Go Shriek", which was about a group of high school kids spending a night in a furniture store as they get picked off by a bizarre cross-dresser.