EHKOS said:
loud noises. The latter due to autism, some of my senses are very sensitive.
Having Aspergers, I know how that goes. I was fasinated by trains when I was younger...but couldnt get close to them unless they stopped because the sound of the cooling units (the REALLY loud parts) and the horn hurt my ears.
Irrational fears: Heights, unless strapped into something. Rollercoasters are fine. Standing on the ledge of a skyscraper? Panic mode!
Blood, unless caused by military, guns, or its my own

. For instance, I cant watch "Final Destination" unceasered without feeling sick because of the blood and gore.....so I change it to "Saving Private Ryan" and think "Ah, thats better." as someone gets turned to paste by a tank shell.
And this may be more of an Irrational hate, but:
Hippies. The closer to the sterotype [http://en.wikipedia.org/wiki/Hippies], the higher the hate meter goes. I just...I dont know. I dont hate anyone without a good reason (dictators and criminals have a good reason), but...I hate them. Not "I really mean dislike.", I HATE them. Although now that I think about it, it may have something to do with thier drug use, thier embrace of "free love", and thier oppositoion to the Vietnam War. Um........is it bad that I literally saw red when I typed and thought about that last one...or that I find the idea of smacking a hippie with the butt of a rifle appealing.