I've been playing a lot of RPG's lately. It's my favorite genre of video game & it just so happens the last 3 games (including the one I'm currently playing) have been RPG's all on the Xbox 360:
Lost Odyssey, an epic RPG that was very challenging & took a long time to beat. But I did like it a lot.
Eternal Sonata, a really awesome story & great characters in a fairly easy but really great RPG.
Enchanted Arms, just started playing it & it seems pretty good so far (but I would recommend the other 2 on this list much higher)
I was pretty excited about beating both Lost Odyssey & Eternal Sonata. Lost Odyssey was deffinitely an accomplishmen