Here's the start of my list.

1. before I go to bed, I must touch each exterior door's lock.
2. No part of the body is allowed to hang off the edge of the bed.
3. Never look at the attic/crawl space entrance... never.
4. shoes on or socks off.
5. no food on the plate is ever allowed to touch other food on the plate.
6. the pat down (and seemingly random times throughout the day, I must pat my various pockets to make sure wallet, keys and cell are all still present)
7. Keep one hand free at all times.
8. check every stranger for a weapon
9. always sit with back to a wall
10. always identify your exits
11. narrow stairs are bad. Narrow stairs that lead to basements are worse.
12. I have to force myself to step on cracks in the pavement, or on the lines that separate tiles at the store.
13. Separate small candies by color. Then eat from the larger groups until all groups are even, then alternate so that the last "round" is one of each color.
14. Never turn off the radio / mp3 player / cd player / etc in the middle of a song.
15. If I think about breathing, I have to continue to think about breathing until some outside stimulus distracts me. (I DON'T want to forget to breathe)
16. Toilet paper goes on the roll with the paper spooled from the top.
17. My inbox (email, rss, whatever) must always be zeroe'd. I pretend it's an efficiency thing, but in reality I just can't have even one email demanding my attention.
18. No close talkers!
19. DO NOT TOUCH ME!
20. Just because you have mastered enough of the written language to read my name on my credit card does not mean you may call me by my first name.
21. Rip open individually sized bags of chips, or dump them in bowls. I hate the feeling of sticking my hand in a bag of chips.