Woot! High point of my week, by far.
I was walking home from dinner, and I see something being projected on the side of a building. I assumed it was a 360, because of the "A" button. Text was too blurry to read, but upon closer inspection it was a WII.
Guy came up to me and asked if I've ever heard of Metroid and that they were demoing MP3.
I grabbed the Wii-mote (he made me use the strap), and stood there in a parking lot for 20 minutes playing.
I must say, I am quite impressed. Once you get the hang of it, it is completely immersive.