Halo 2 Addendum
Halo 2 single player: eh.
Halo 2 online: composed entirely of pure love.
The Live interface is pretty smooth, and the games themselves flow very very nicely. Weapon balance is nice, maps are pretty, and stuff explodes all over the place.
I need to fiddle with the Clan support a little more, and I’d like to spend some time with the non-deathmatch modes (especially the more vehicle-based games), but overall it’s one of the best multiplayer games since Counterstrike.