Hahahaha... the first video contains the immortal lines 'CO2: they call it pollution, we call it Life!' - it is beyond parody and without content - and so you should definitely see it.
Had some trouble finding this myself, so I'm putting it up here: tech demo of crytek's new "cryengine 2" 3d engine. Ignore the generic first person shooter action - just imagine taking the engine, and slapping a collaborative game / toy / tool in there. Actually, don't imagine it... Bam! ;)