Needles for me. No idea what the correct medical term is for that, but I'd make a s**t heroin addict. Not great with heights, but I'm not sure that's actually a phobia. As JackFrost said with snakes and spiders, that's partially rational. I'd say a certain caution around heights is ingrained in our evolution. Apes who weren't probably ended up marinading in their own bodily fluids on the floor.