We played Wii Sports, because I was thinking of buying a PS3 and after I did, and regretted it, we rushed to buy a Wii as fast as we could. This was the first time we actually got together to play on the Wii, some people seriously had their jaws on the floor and they had seen the PS3.
The way it's designed and the whole novelty factor is still quite astonishing, most of them have the same technology in their cell phones but they were still amazed by it. Just goes to show how the experience of a product goes far beyond technology. It's about integrating an experience into the entire package. We really had a great time.