1. I can't stand anything greasy. Actually, let's split this into 2 parts. First, I can't stand greasy food. It's not unusual for me to pat pizza dry with a paper towel before eating it. I don't use margarine, salad dressing, or hummus. If I try to politely take a bite of something greasy I'll start gagging. On the plus side, I don't have to worry about my cholesterol level.
2. Second, I can't stand touching anything greasy. I wear dishwashing or surgical gloves for anything slimy, up to and including slicing potatoes. This has been since childhood. One of my earliest memories is of hiding behind some furniture in kindergarten so I wouldn't have to make animals out of clay.
3. I'm allergic to wool and very sensitive to lace or anything similarly scratchy. I've had my feet start itching through my socks from stepping on a wool rug.
sdavido has basically purged all the wool from his winter wardrobe so I can hug him comfortably.
4. I'm very sensitive to light. If I'm driving into the sun, even wearing sunglasses and with the visor down, I have to squint my eyes almost shut to see the car ahead of me. On the other hand I have great night vision. I'm good at finding things in dark attics and basements. This is, depending who you listen to: because I have light blue eyes; because I spent so many years reading by flashlight; because I'm part cat; or because I'm secretly a vampire.
(Actually I'm sensitive to just about everything, but I don't want this to get monotonous.)
5. Everything I'm wearing has to match. Friends often check to see which accessories I'm wearing when they see me. I've been told that I'm actually incapable of not matching; I once wore what I considered to be a horribly clashing outfit to a Halloween party as a costume, but was told that it didn't really clash.