Oooo! 24 today!
I was looking on Slashdot at today's poll which is titled "Favorite Compulsive Behavior?". I realized I did three of the eight choices. My first choice was Pen Clicking; but I also know I do the Knuckle-Cracking a good bit too. Only after I looked at the options again did I realize the one I now (since this past summer) do the most is Ring-twisting.
I wonder if this is something that's very common among married men; as I suspect many have not really worn a ring for much of their life. I don't think I've really noticed Leland (co-worker) do it much. Quite interesting.