I check my alarm like 10 times before I go to bed. I straighten out things at stores and will even walk all the way across Target to put an item back that I find sitting on the wrong shelf. I spent thousands of dollars replacing all of my appliances so they'd be the same brand. I bought a new blu-ray player so that it would be the same brand as my TV. I buy all ASUS computer parts then bought an ASUS router so it matches even though I didn't need a new router.
I'm not OCD, I just like things organized and matching.