whoa, i posted here and then peaced for a while.
kipup, that definition i gave was based upon my own reasoning, and i admit, open to being picked apart because I'm not necessarily an authority on the subject. my point was that there isn't (or if there is, there shouldn't be) one 'parkour pace'. if you're being chased by a madman who is sprinting, then you will probably sprint too. if you need to travel 15 miles, you'll probably mosey along. that's how your goals define your movement.
as for vids, i do think that they are more entertaining to see when people are running. ultimately however, the level of aesthetic pleasure gained out of watching a video will vary based upon each individual's subjective opinions, so i don't think that the speed at which a traceur/freerunner travels in a vid is up to much debate.