You probably came across these super strong kids on YouTube.
Here are some clips I found particularly impressive.
Hand balancing on a single bar
http://www.youtube.com/watch?v=Oijp1Apzeg4
Human Flag Pike Press
http://www.youtube.com/watch?v=I-ZOqSskRDY
Handstand Push-ups and extreme stretching
http://www.youtube.com/watch?v=1bJ0RyBFvsU
