very nice video! Not all the stuff was really difficult to do, but he(you?) did it very fluidly. Next time I hear someone ask if parkour is all about flips and crazy aerials. Ill show them this video.
That's not me, it's just the best actual Parkour video on Youtube without any fancy Freerunning stuff inbetween.
Also Parkour is not ment to be difficult, it's ment to be effective. http://blane-parkour.blogspot.com/2007/04/dilution.html is an interesting (and sort of related) blogpost about how Parkour has changed in the past years.
My abilities in Parkour are more http://www.youtube.com/watch?v=CmaY4TRgIXI.
(Note: I'm not in that video either.)