Two people sent me this one. An octopus takes up living in a coconut shell, not only using it as shelter but carrying it along when it needs to move, and using two half shells to make armor - making the octopus the first inverterbrate filmed using tools.
The man they interview is a bit annoying though, what with all his "lower life forms" talk. Nothing living today is a lower life-form - we all took the same journey and the idea that life is a ladder leading all the way 'up' to us is incorrect.
Here's the original footage without Dr. Higher Lifeform and his dramatic music.
Veined Octopus, Amphioctopus marginatus, showing sophisticated tool use behaviour. Footage shot by Dr Julian Finn of Museum Victoria.
Finn, J.K., T. Tregenza and M.D. Norman. (2009) Defensive tool use in a coconut-carrying octopus, Current Biology, Volume 19, Issue 23, R1069-R1070, 15 December 2009