I recently rated a handful of games, and here are the best ones:

BioShock: 10
Final Fantasy XII: 9.0
Halo 3: 9.0 [UPDATE: Downgraded from 9.5]
Heavy Weapon: 8.5

Also, I went back and reconsidered Gears of War, changing it from a 9.5 to a perfect 10. You can view the full list at the very bottom of the page: "All My Ratings."