I apologize if this has been posted before... 65+ year old options trader at Optiver (Australia): http://www.youtube.com/watch?v=LTfkwNLk_Xw
a few years back they featured a 90 yo trader on the nyse. dont remember the tv program now. it was one of the 60min/20/20 type programs. he started dancing with the female interviewer on the trading floor, and he could sure cut the rug. i'd say he had another ten years of trading still in him. PS: interesting trader reading: http://nysetrader.blogspot.com/2007/04/weekend-reading-for-apr-21-22-2007.html