First you need the console itself of course!

I suggest picking up a few of these because the Wii is more of a social console that is better experienced with friends.

Same as the Wiimotes, not all games require it but you need one for each controller you own, it's essential.

Same as above except the new improved and cheaper version.

Acclaimed and much talked about fitness game, comes with the balance and the game.

If you're going to play Wii Sports Resort you probably buy a few of these for your controllers because they are necessary to play the game. My only problem with MotionPlus is that very few games are compatible with it and they are mostly sports games.

Accessories that can be used for Wii sports.

There are different kinds of shapes you can insert you Wiimote into for a more realistic experience. This is an example, the Wii Zapper it comes with a Crossbow training game featuring Link.

One of the best Wii games so far in my opinion.

Might want to pick up extra wheels for Mario Kart and other driving games.

Another solid launch title and this one is very amusing!

One of the only mature games on the Wii, this is one of my personal favorites; a hardcore adventure in a great black and white manga comic book style.