Ah man, Motoi Sakuraba is really cool. He does a lot of video game compositions. Let's see... I'm not sure what he's most known for. The ones off the top of my head are Golden Sun, Baten Kaitos, Star Ocean (not sure what one/s), and works in the Tales series.
He's the keyboardist in this video.
According to the unofficial fansite, one of his hobbies is audio equipment even.