I know this sort of thing has been widely reported... but I have a very similar experience. Except that its extended past my GF to include her immediate family - sister, mother, aunties, close friends. Its definitely the coolest thing about the Wii - watching complete "non-gamers" use (or try to use) it :)
Gesta Non Verba
Nocturnal is helping companies get cheaper game ratings in Australia:
Wii code: 2263 4706 2910 1099