Wii Sleeper Hit. and it comes with the system
I'm not sure if Wii Sports will have the same 'Iconic' effect as the superstars of the 80's and 90's but it completely keeps people having fun.
I have several games for the Wii and when new people come over to play it for the first time, they almost alway pick this game to play first. I don't know if it's because it all they know, or if it's because it has fun simple games that everyone already knows how to play. None the less, they really seem to enjoy this title.
I can't say I disagree with them. I expected to play this game for a little while to get used to the Wiimote. I still find myself putting this game in and playing it.
Before I got a Wii, I thought this was just the 'introduce the Wii' game and that it was for people who didn't get any other games with the system. I have to admit, I was wrong. There is a large amount of content to this game.
Between the Training missions, especially the second bowling one, and the wii Fitness section. We have been having a ton of fun playing this and I can't image it will not continue to be a game that is frequently played at our house.