You are absolutely right! I have seen it personally in my area (Pittsburgh) at a nice mix of communities, Adult Family Homes, Assisted Living, CCRC, and Skilled Care. This is such a great way to still be involved in something. When I am out touring communities in my area too, I let the communities know of the feedback with the Wii at other communities, and I think 5 additional communities had purchased Wii based off my input!
This isn't a "kids" gaming system, such as the ATARI, NINTENDO, etc. It is truly multi-generational. Any one from my 3 year old to friends and family members of all ages enjoy playing Wii. Be it bowling, darts, Carnival Games or even the new Wii Fit!