i have to say this one blows that one away. The guy jumps out of the plane with wings that unfold and has 4 turbine model airplane engines to propel him. http://www.metacafe.com/watch/468993/jetman/
Those turbines aren't modified at all. I'm not sure what you meant, but you can buy those all day long. Only thing is the power supply and fuel which would be custom to the wing.
That looks so dope. I'm tryin to do the wing suit eventually but from what i heard is you need to do over a 1000 skydive jumps first before your eligible. It's worth it though!
those arent highly modified model airplane jet engines. off the shelf, they are pricey but totally doable. I have a brother and dad that is really into model planes and they said they are stock, just really expensive good ones.