Essentials (11)
Super Mario Galaxy
Super Smash Bros. Brawl
Metroid Prime 3: Corruption
Mario Kart Wii
The Legend of Zelda: Twilight Princess
Resident Evil 4: Wii Edition
World of Goo
Guitar Hero: World Tour
Rock Band 2
Wii Fit
Wii Sports
Recommended (18)
Zack & Wiki: Quest for Barbaros' Treasure
Okami
Call of Duty: World at War
Super Paper Mario
MadWorld
Pro Evolution Soccer 2008
Boom Blox
Fire Emblem: Radiant Dawn
Tetris Party
Warioland: Shake it
De Blob
Medal of Honor: Heroes 2
The Godfather: Blackhand Edition
Deadly Creatures
Geometry Wars: Galaxies
Blast Works: Build, Fuse & Destroy
Bomberman Blast
Lost Winds
Noteworthy (14)
Fifa 09 All Play
No More Heroes
House of the Dead: Overkill
Endless Ocean
Mario Strikers: Charged
Final Fantasy Crystal Chronicles: My Life as a King
WarioWare: Smooth Moves
Opoona
Megaman 9
Bully: Scholarship Edition
Lego Star Wars: The Complete Saga
Toki Tori
Final Fantasy Fables: Chocobo's Dungeon
Tales of Symphonia: Dawn of the New World
I think I covered all 43 decent games on the Wii here. Do not buy any of the games not on this list! 
