http://bit.ly/XhMQek - Get Antichamber on Steam on Jan 31st.
TotalBiscuit takes a special look at an earlier version of the puzzle-game Antichamber, accompanied by its developer. This was filmed at PAX last year and I held onto it at the request of the developer to put out close to the games release. This does not necessarily reflect the final product, though that's a good thing since it avoids some spoilers and the commentary is what's interesting.