If you are going to see the Matrix Reloaded or T3 or any other blockbusters constantly playing at the Metreon, don't forget to check out the interactive video display on the ground floor there.
I was in the area this weekend and it is quite neat to see the children play with it. My favorite was the water effect. You step on the ground and the video projection does as if you stepped into water and creates a ripple effect throughout the picture. At the end it isn't a really complicated technology, but a nice idea with good follow through. Of course, as you can see from my Sidekick pictures the subliminal messages are always: Play and Shop. The MGM's Tabú Ultra Lounge in Las Vegas is using their technology too.