There are some good games out there, the problem is none of them are getting any publicity. Not every good game can afford it's own flavor of Mountain DewÂ
Besides Galaxy and Wii Sports, I recommend:
Zack and Wiki
(Excellent point and click type puzzle that received high reviews across the board)
Metroid Prime 3
(FPS with controls that rival mouse and keyboard. Also has stellar reviews)
Medal of Honor Heroes 2
(Controls that surpass even Metroid Prime 3. Online multiplayer supports 32 players)
Resident Evil: Umbrella Chronicles
(Excellent on-rails shooter, just like at the arcade)
Battalion Wars 2
(An action version of Advance Wars)
Fire Emblem: Radiant Dawn
(Great strategy RPG)
Super Paper Mario
(Speaks for itself. Some RPG elements were taken away, now it's more of a platformer)