Games that you just play.
Wii Sports comes bundled with the Wii. Not in my case. I bought a Japanese version in a bundle that comes with 2 sets of controllers and Wii Play.
A pretty fun game. A few choices to choose from and they're all pretty fun and won't get too boring. There is multiplayer so you can play with your friends.
One big drawback. After a whole day of Wii Tennis, all 5 of my friends (We played doubles with winner stay on.) and myself had shoulder pains the next morning. One of my friends play tennis on a regular basis and the pain disappeared at around lunchtime. The rest of us took a day to shake it off. One of my other friends took 2 days.
Very fun. You can play by yourself or play with your friends. Will keep you occupied for a while until you get bored and want to buy some other games.
Will keep you occupied for 5 minutes. Either get this game dirt cheap or get it for the Wiimote. I think this game was very disappointing and can not even compare to Wii Sports. It only has multiplayer for 2 and the games are extremely boring and repetitive.
WarioWare: Smooth Moves
A very fun game so far. Lots of cool minigames that utilize the 'Form Baton' very well and the different forms to hold it are pretty amusing.
Probably the best use of the Wiimote in all the games I've played so far.