I'd have to go with Star Ocean 3 here... it started off great, and from what I hear, the story is pretty damn good once things get going... but seriously, I can't believe how stunningly crap the party AI is. I tell them to conserve MP, they still spam special attacks and end up killing themselves with full HP. Why? Because you die if you run out of MP, and you can't just use a regular life item or spell to revive them, you have to use some BS elusive item that you only get 1 of occasionally, so, basically, you're better off just playing the game without other party members, which in most cases is impossible. Seriously. I don't think I've ever walked away from a game so frustratingly angry.