Actually, he's got a few other games on that list of his. You just have to dig them up, because they are buuuurried. So far, the games that I know he's loved:
Portal (Part of the Orange Box series)
Bioshock (which he got the good parts out of the way before reaming it with System Shock 2)
Psychonauts
Saints Row 2
Thief 2
And those are all I know of so far. xD
EDIT: Oh, and he gave Batman Arkham Asylum Game of the Year last year, but also admitted it was pretty much a no-contender because there really weren't any mind-smashingly good games.
Portal (Part of the Orange Box series)
Bioshock (which he got the good parts out of the way before reaming it with System Shock 2)
Psychonauts
Saints Row 2
Thief 2
And those are all I know of so far. xD
EDIT: Oh, and he gave Batman Arkham Asylum Game of the Year last year, but also admitted it was pretty much a no-contender because there really weren't any mind-smashingly good games.