>My geography teacher in high school could do that. His hands, from fingertip to the base of his palm, were almost a foot long. No pun intended :)
Never bothered to measure, but mine seems like a little short of 8". Probably comes from playing (with) keyboards - played accordeon when I was a kid - which probably trained my fingers to be very movable, and loosened the joints. Could have been a famous pickpocket, had they not invented computers :).