I never played the game, but I saw a commented video of a gameplay of this game. The guy was so impassioned with it that it made me want to buy the goddamn console and game just to play.
Journey's definitely a reason to get into the PlayStation Network's offerings (not to mention PSOne Classics and Blu-ray functionality, though Sony's definitely got a lot of snags).
I almost cried from co-op. Not a co-op campaign, but the functionality itself. This is a beautiful game.