Spiders creep me out, but I usually just wind up stomping on them.

The only that tends to bother me is when bad things happen to fingernails. Getting ripped off, snapped off, or something like that.

It's weird though. I can watch a person get beheaded, dismembered, gutted, have their eyes stabbed out, teeth pulled, or have a drill taken to their forehead and I'll be perfectly fine and maybe get a laugh out of it. Start messing with fingernails though, and I'll start to get sick.

Example: http://youtube.com/watch?v=9UBAYFVI7Nw