I'm not a great fan of MMORPG's as I've grown up on console gaming and Zelda has always been king. Although zelda could perhaps be classed as an adventure game, I would class it as the best action RPG series ever. (shenmue I would class in the same genre although not in the fantasy niche).
In the realm of JRPG's FFX was, although not the best recieved, the final fantasy I enjoyed most. It has to be said quite a lot for Yuna and Rikku

My favorite at the minute is Shin Megami Tensai Devil Survivor which is the most addictive game I've played in the past few years. The branching storylines, engaging storyline and addictive pokemon style monster fusion and collecting rank it very highly in my books. Great for some RPG battles on the go.