The Seniors for Living web site has an interesting and inspiring blog post that details the exploits of senior athletes doing what most their age and many of those younger can't.
A group of skydiving seniors ranging in age from 60 to 80.
A 92-year-old man who holds the current Guinness Record for the oldest bare-footer water skier.
An 89-year old surfer dude.
A 91-year-old woman water skier.
And more. Watch the videos here.