6. Leprechaun (1993)
I can actually picture a leprechaun being a horror movie villain. They are horrid little creatures, obsessed with rainbows and pots of gold. And they have ginger beards. But the only scary thing about the film Leprechaun is that it launched Jennifer Aniston's career. It is actually a horror comedy but that combination should never impede a film giving a fright or two along the way. Leprechaun possesses no frights and no comedy. Warwick Davis as the rampaging leprechaun looking for his gold just about passes himself as an evil villain, but he is just not scary. To appreciate the movie you have to be a committed fan of really bad horror movies, the 'frights' in the film wouldn't phase a little kid. For me, it's too witless and dumb to even find it entertaining in a 'so bad it's good' manner. And it is another film that spawned numerous sequels despite its unscariness and total idiocy. I think he even got to go to space in one of the sequels which seems spectacularly silly. Sinister leprechauns around the world have had their reputation smeared by this movie. Nobody will ever find leprechauns scary after watching this film.