This is also very cool: http://www.spore.com/comm/prototypes As far as I know Spore is the first game to publish this kind of previous work, and not just the source code (some games published design docs, and a lot of games published postmortems too, but entire working prototypes? I've never seen that).

Introversion Software released a lot of development stuff for their game Uplink (tagline: Trust is a Weakness) on a separate CD. You can download the contents of the CD from their site as well: http://www.introversion.co.uk/uplink/otherfiles.html

Thank you for the info.

omg, i love this. the little kid in the blue hat is hilarious. i wonder if IDEO has outtakes too.

"The designing never stops."

That was comedy gold.