Whilst this is amazing to watch, I have to admit I didn't even know that Octopuses could walk around on their tentacles like they do in the video.
Octopus as a coconut rolling on ocean floor http://www.youtube.com/watch?v=_wgla5smg64
Opening a jar http://www.youtube.com/watch?v=ocWF6d0nelY
Also, I don't know if you noticed but when it was walking with the coconut, it changed its skin color to the color of the ocean floor to mask itself, and then when it tucked into the coconut, it turned itself dark, so it was hard to tell it wasn't an empty coconut.