All mentioned games are worth it. I was going to suggest Yakuza as well, but I checked your profile and I don't usually reccomend M rated games to under 17's.

FF12 is the 'newest' of the bunch though, and Okami is another hefty game. For some not-so-new stuff, look for one of the Katamari games and/or Shadow of the Collosus if you don't have them.