I would suggest
4 wiimotes for the whole family to play. I wouldn't bother with the stick on peripherals such as the tennis racket and golf club, etc, because they don't contribute to the game and are largely pointless.

Games wise, it comes with WiiSport which is lots of fun when you're playing in a group, but other games that are really good for people with short attention spans are WarioWare and Raving Rabbids. They're just lots of mini games and the kids will love it, as will you if you have a silly sense of humour. The rabbids still make me giggle and when my friends come round for a night out we sometimes start off on the Wii whilst everyone is arriving because it's fun and doesn't require much thought.
( Kitty v1.0 desperately naive, Fri 20 Nov 2009, 12:29, Reply)