What are some good 4-player party games?

[SOSTrooper]

I'm planning to get a few more games for the Wii, I currently got Wii Sports, Wii Play, Monkey Ball, and Warioware. Besides Rayman, what are other good 4 player games?

 

[js1]

Sonic has solid multiplayer for 4 players,

 

[chodax]

Isnt wii play 2 player?