Wario Ware is a blast for Wii.
Wario Ware is a great game for hosts who like to entertain friends. The funnest aspect of this game is the multiplay.
So the game involves you, the player putting yourself infront of the TV and trying to play minigames by holding the wii mote, or "form baton" in a particular way. Like, in front of your nose pointing forward, called "The elephant", hand over hand, called "The Janitor".
These poses and stances are all used to play a variety of challenges. The fun comes when someone new is playing and hordes of commands come from companions describing what exactly you're supposed to do on each mingame. A new player is a quick victim but the games are amazingly simple (still fun!) so experience is gained quickly. Players can challenge themselves in single play mode, needed to unlock multiplay and a variety of other things.
I was lucky enough to scoop up a rental of this hot game last week at Blockbuster. Lucky since it has been rented out every previous visit I've made to the store.
The game has been available since the early release days and is still priced quite high. But after having experience with the rental, I think I might be looking to own the game very soon.