Here's a weird one: Pac-Man World. 3Dish platformer with a lot of neat tricks and surprises. It's not groundbreaking, but it made me genuinely happy when I played it.
Also, Castlevania: Symphony of the Night. There's so much stuff to do in this game, and if you do it right the
and there's even more stuff to do.
I cannot make a top 10 list of anything and I get in trouble for not being enthusiastic enough. When the guy amping up the crowd yells "I can't hear you!" I'm the one yelling "I DOUBT THAT" back.