My Bloody Valentine (1981)
When people say this is one of the better early slasher movies they aren't kidding. It holds up incredibly well and to this day is probably one of the best slasher films ever made. The premise that the killer returns to stop a Valentine's Day dance is a bit cheesy but completely forgivable considering how well done this film is. The acting is solid, the mood is eerie, the scares are tense, the kills are good and the gory special effects makeups are very effective even by today's standards. I think the miner is one of the better slasher movie villains. While the costume is kind of basic it is also very menacing and at times the use of breathing is reminiscent of Darth Vader.