The guy in the first video dips really low for his jump - as if relying on brute strength alone to get up there. Is that guy a weightlifter? Should he not have better elastic strength due to practicing the double knee bend in the Olympic lifts?
Yes he’s a weightlifter.
Well maybe he’s a mixed fiber guy 
Fast twitch guys use shallower dips I believe
Or maybe he just need the extra dip for confidence, because jumping onto a pile of bumper plates that high is sure scary!
But he doesn’t make it?
He needs to remove at least the top three lest he injure himself!
I think you might find he was being a little cheeky with his comment. Well, it made me chuckle anyway.
Well I don’t think he wants to actually stand on top of them
here is another to add to the collection
- 57inch “box” jump
right click and save before viewing!
http://www.members.optushome.com.au/coolcolj/Movies/57inch_Boxjump.mpeg
Where in the world do you get this stuff? 
I’m incredibly impressed by that one because of the ceiling.
the polish one is off a video, the first one I found on an oly site’s directory, the last one was posted on a forum
Yes,
i heard that there´s a Forum Site about Jumps…
nah its from a powerlifting/strength forum