Well, after months of sitting in my basement, my lovely Wii has been been brought into our living room. It feels a little strange to be playing it again, but I'm sure I'll get back into the swing of it pretty soon.
Sadly, I only have three games for it. Super Smash Bros. Brawl, Wii Sports and Fire Emblem Radiant Dawn. Wii Sports is great for the entire family, Super Smash Bros. is a hit with kids and teenagers and Fire Emblem is geared more toward the hardcore RPG gamer. All of them are fun in their own way.
Like others have said, there is a solid library of games out there, so it won't be hard to find something that will satisfy everybody's tastes.