Infinite Undiscovery does pick up if you can get over the first couple of hours. Also Kaworu is wrong about the Lost Odyssey load times, at least now that you can install the game to the hard drive. The load time problems were in an early review copy of the game, the release version got the load times down to a slightly less awful time of like 20 seconds, and installing the game to the HD helps even more. Unfortunately, it's still not a very good game, though it's pretty in some parts.
The only jRPG worth playing though is Enchanted Arms, because it's the most ridiculous jRPG I've ever played. Probably provided centuries of Yaoi material.
The 360 has a surprising number of high profile RPGs but unfortunately the japanese ones are all paint-by-numbers affairs featuring the same dumb characters you've seen in every game (strong male leads, a weak female that the male lead must protect but who is capable of amazing healing powers, a brooding individual, and usually a spunky supporting female)
WHY SO SERIOUS HAHAHAHHAHAAHAHAHAHAHAHHAHAHAHHAHAHAHAHAHAHAHAHHAA