A few not mentioned yet...
The Conduit - as far as FPS's go it's somewhat average but it's got great visuals for a Wii game and is very customizable.
New Super Mario Bros Wii - Not as good as other 2D Mario games but playing simultaneously with 4 players is a blast.
Indiana Jones and the Staff of Kings - I liked it ok enough, and whipping the bad guys was fun, but the main reason I'm including it is because of the included 'Fate of Atlantis'