Jasper Benincasa is very old now and can still, unless I am mistaken, do a one arm chin. Okay, I know, the guy is a genetic beast, but he had to train for the kind of strength he has.
And Jordan Jovtchev, in terms of the gymnastics world, might as well be walking around with a cane and false teeth - but he's still a super gymnast. I'm hoping that, if he goes to the Olympics next year, he walks away with the gold medal for still rings. And he could do it, too.