To be honest, most horror movies make me giggle. I used to be absolutely terrified of any movie remotely scary, but one day my brain just, I don't know, clicked, and now I readily watch them. I'm a huge fan of Friday the thirteenth, those deaths are exceedingly humorous for me, like the sleeping bag death in (the fifth one?) It's not the killing that makes me laugh, its the... I don't know, how strange it is?
I love Halloween. It didn't make me laugh, it was exceedingly suspenseful, and good.