Nicky Hill brings us this information from the Boom Blox session.
Coming straight from the EA session about the development process behind Boom Blox, we thought it would be nice to inform everyone that there was a special “GDC Easter Egg” presented at the end of the session. It seems as though Head Tracking has been worked into the production of Boom Blox. Some things are unclear as to whether or not you can move around through previously recorded levels that you played through, or if they are custom built levels. The important thing is that it IS worked into the game and is available. Things needed by the player would be either LED glasses, or a wireless sensor bar, but by using just that and the controllers the same headtracking effect that we have seen in various online videos will be possible on the Wii.
Update from cortjezter: I’m including a couple videos… first one is the “head tracking,” second is just a couple minutes of footage from the same presentation. All taken with a small shaky-cam; I did my best to hold things still, and pardon the terrible audio!