Disaster: Day of Crisis: Adventure/Shooter. Absolutely great. LAcks a bit of polish but the gameplay is awesome. My only game in recent memory I actually restarted the moment I finished it.
Shaun White Snowboarding: If you have a balance board this is one of the best Snowboard games ever.
Fire Emblem Radiant Dawn: Strategy RPG with incredible depth. The story is amazing and you'll spend hours and hours on the battlefield, with over 40 characters you can develop.
Call of Duty World at War: Very good FPS. Wii Remote is obviously great for this kind of game. Graphics are great and has online.
Pro Evo 2008: Best foorball game ever. Period.
De Blob: Great Platformer
Edit: Metroid 3, Zelda, Okami, Zack & Wiki, RE4...aaarghhh there's really many great games.
