Man in the Funny Hat
Hero
Never have done for D&D but we have for other games. First and foremost would be the famous card game of Nuclear War. Someone managed a really high amount of damage in making his retributive strike so we wrote it down - and then started tracking highest retributive strikes and highest strikes from a single weapon/warhead in a turn. Then started noting excessively small or large populations being dealt, etc. Other wargames and boardgames also lent themselves to keeping a records list, especially when there is a box lid to write them on. Supremacy springs to mind. We had to quit playing that one though - games took too long and we got into too many arguments. 
