I had no idea there was a word for that. I briefly did gymnastics when I was real young and I think Parkour is amazing. I also love the visual metaphor of navigating the urban landscape like this -- men in suits with briefcases doing this -- and the comparisons. Very spot on in my opinion. I would only add that you clearly need to be in good shape to do this and I think the same applies to business or any other "creative" endeavor (defining "creative" as "something you make up as you go). You can overcome a lot if you are starting out from a basic level of strength, flexibility, know-how and so on. But some people will need to do a lot just to get to that starting place.
If you're interested in starting, email me (in my profile) and let me know where you are. I know of people all over the place and can connect you with the local community.
It's never too late to start - like I said in my longer reply below, parkour is awesome because it can scale to anyone at any level of fitness.
Thanks, but I'm someone who is currently walking seven miles at least once a week so I can reverse the damage to my body from a deadly genetic disorder (that nearly killed me 10 years ago). That's currently enough challenge for me. :-) If I ever feel like I have gotten my body back from the demon that stole it, I will consider getting in touch.
Sounds good. Parkour is all about doing things that are challenging for you, not necessarily the next guy. If you're making moves to improve your health, you've got my support. :)