Wow. Now some people might already know that I have an awe of parkour that very possibly borders on hero worship: I am only a moderate risk-taker and nowhere near ... um... springy enough to be able to pull off those moves. I've only once been able to manage a (really minor) dyno at the rock gym. But I have serious respect for people that can do it: and I think one of the things I really like about it is how it's about seeing all the possibilities of your environment, thinking in multiple dimensions. How it's about grace and play and power all at once, and how it becomes a mental as well as a physical discipline.
And then this evening I came across this video of Danny MacAskill in Edinburgh. I stopped, jaw-dropped, and watched it in total awestruck fascination. This is gorgeous. It's dancing with the city, on a bike.