Is Oldboy horror?

[FreddysFingers]

You didnt feel crawly when

Spoiler

he found out he was screwing his own daughter ?

If that's not horror I dont know what is

I cringed but that doesn't necessarily mean it's horror. I cringed when the T-Rex at the lawyer on Jurassic Park but does that mean it's a horror? Hell, I cringed when Johnny Knoxville dumped snakes on Bam in Jackass but that wasn't horror.

So what separates that from a movie like "I Spit On Your Grave"?

I don't consider that a horror movie either.

Just because you get scared at certain scenes doesn't necessarily mean that the film should be horror. I believe a horror movie is where the film bases it's actions on the notion of scaring you, where as thrillers are a cross between horror and drama. Seven, Silence of the Lambs, Oldboy and American Psycho are all non-horror movies but they are classified as horror.