This thread makes me feel a little saner. SO many things mentioned that I do: play-by-play for video games, talk to myself, etc. Others of note...
1) Add my name to the "can't watch awkward situations on TV" list. The British version of "The Office" most immediately comes to mind.
2) I compulsively straighten. If there are, say, three pens on a desk, I will move them into a neat, organized pattern; all facing the same direction vertically and horizontally and evenly spaced, for instance.
3) If I have control over the numerical outcome of a situation - the TV volume or amount of an item purchased - it HAS to be one of a certain group of numbers. This includes 1, 3, 5, 7, 10, 15, 18, 20, 22, 23, 25, 30, 35, 36, 40, 42, 47... there's no overall pattern, but I just "know" when the number's "wrong." I've gotten better about it in recent years, mostly because I was driving my wife nuts.
4) I pay attention to the minutia of sports uniforms and logos on a fanatical level. Luckily I've discovered Paul Lukas'
UniWatch blog and his occasional articles on
ESPN.com; it's good to know I'm not alone.