a long time ago I found that starting a fire gave me a hard-on.
Don't get me wrong, I'm not a pyromaniac (if I would start one it's with consent and in a safe manner, barely ever happens) but still it can get me excited, at least at first.
Same goes with traffic crashes, which I noticed in a videogame "Driver San Francisco", when parking let's say a bus in the middle of the road and see brainless traffic crash into it.
Someone told me this was perfectly normal, I also saw references to it in Drawn Together (but knowing these series...)
So how much of a freak am I? I don't think it can really be called a fetish, since the effects tend to wear off after a while. But not on the long term.