Portal Tech

Sure everybodies seen this but how cool is this trailer? Portal one of the funniest game trailers i think i've ever seen, plus genius physics!

Collaborative environment

Check out OpenCroquet open source 3d interactive world toolkit kit built on Squeak and Smalltalk, i've donwloaded the beta, its quite cool, works differently to a multiplayer gaming environment as in there is no central server, rather it works on a peer to peer synchronisation format.