We've got another one suggested by WinnieTheWoot this week. What are your minor obsessive compulsions? Not the big ones like germophobia or turning the lights on and off four times (not three times, not five times, FOUR TIMES!) just odd little things that don't really have much impact on your life but you still do them anyway. The only thing I can think of for me is that it bugs me to stop reading in the middle of a chapter. It really took me a while to get into reading Pratchett because of this. Winnie has a couple more interesting ones but I'll let her share them herself.