I have a memory of Brad doing a quick look with -I think- Vinny for a game that was a first person physics puzzle game, very similar to Portal. In the video, they were manipulating the environment by picking up colored spheres and droping them into slots that would then cause parts of the room to move around. It was a very sterile labratory type environment and I remember himsaying he had talked to the creator and there was no story at that time.
This was a PC game, and I think they said it wasn't finished yet. I looked back through the QL list, but didn't see anything that looked like the video i remember. Any help is appreciated.