OMG avanalarf, some of those things were lethal. The escalator one was particulary reminiscent, I nearly did that the only time I have used one and consequently I have never used one since. In fact I have a real phobia about them. Would rather take time walking up the ordinary stairs.
There was really potential for some very serious injuries or death in that lot, some where almost suicidal!!!
I struggle believe that some of those were done deliberately, like the guy jumping from the roof holding his mate upside down to pile drive his head, i'm amazed he didn't kill him outright.