Oh man, idk if I can actually put it into a proper top 10, but here's my list in no particular order. I'm going to limit to one game per franchise.
Donkey Kong Country 2: Diddy's Kong Quest
Halo 3
Jet Set Radio Future
The Legend of Zelda: The Wind Waker
Batman: Arkham Asylum
Crash Bandicoot 2: Cortex Strikes Back
Unreal Tournament
Fallout: New Vegas
Mass Effect 2
Warcraft 3: Reign of Chaos (along with the Frozen Throne expansion)