Helicopter....

[Jbb]

video effect... (http://www.metacafe.com/watch/622959/helicopter_crash_i_dont_know/)

[Ziggy]

I think so.....even tail rotor was at an odd speed.
.
Looking at it again the main rotor speed probably spins in timing with the camera speed...As he makes his first turn you see the blade is always facing the camera, tail rotor spins a different rate so it changes position.....
Good flying actually :D

[RitcheyRch]

Pretty wild.

[BoatPI]

It is the frames per second at which the video was shot at.