Parkour is an activity of French origin, the aim of which is to move from point A to point B as efficiently and quickly as possible, using principally the abilities of the human body.

Just watch finished District 13, it is a French action film which features Parkour and starring David Belle, the co-founder of Parkour. The movie is not bad but the movie is in French and the worst part is that the English dub sucks.

– Wikipedia on Parkour
– Wikipedia on District 13
– Wikipedia on David Belle

Here is a clip from the introduction of the movie featuring David Belle: