As humans we often get wrapped up in our little worlds, myself included, and sometimes forget to open our eyes and take a look around. In regards to fitness this is especially true if, like me, you spend alot of time in a commercial gym, which often has less to do with applicable training - but that's another rant for another time.
One of those times I was searching around for information on agility I came across Mr. Ido Portal, and was immediately impressed by his physical capabilities. But Ido is also an accomplished trainer with a host of knowledge in training for strength, flexibility, gymnastics, and Capoeira among other disciplines.
I suggest checking out his blog for a different perspective on fitness.