A bit late, but I'll chime in:

I sort any candies by color and eat them in sets, saving orange and blue for last.

I also sort my fries and eat them in descending size order.

I click the lock button on my key fob twice to lock my car, and the end button on my cell phone to end calls.

I can't sleep till I close my closet door. (I guess I read Cujo too many times or something like that.)

And the one that gets me the most flack: I CANNOT fall asleep if the sheets or blankets on my bed are wrinkled. I'll leave the bed unmade during the day, and it doesn't bother me at all... but I have to straighten the sheets before I climb into bed for the night.

Thanks for giving me the chance to laugh at myself. I needed it today.