What do you do that's OCD? I do several things, but here's a short list:
1) I memorize the license plates of every single car I see when I'm driving, and I play games with them. One game: I try to make a word that has all 3 letters in the same order. For example, HTE could be "wHaTEver" or "HoTEl", etc. I do this with a plate until the next one comes along. It's the first thing I notice about a car - what state they're from, whether their tags are current, and what the number is.
2) I have to read just about everything, cover to cover. If I pick up a TV Guide, I have to read all of the articles, even the ones I'm not interested in. Even my wife's Self magazine gets read cover to cover. I've learned more about breast cancer than I ever wanted to know with this month's issue
3) I'm a clockaholic, as we've discussed in another thread. I have to have several clocks within view of me at any given time, and they have to be correct, preferably to the second. If a digital clock changes the minute, and another one doesn't, I am about 70% likely to unplug it and wait to plug it back in so it's correct to the second.
That's enough to start with, I guess