I think he's the best composer of gaming music ever. The guy is just amazing.
Now I'm listening to Arc the Lad by Yuko Fukushima.
I own the game and never played it, but the music is interesting.
Sounds like you're an anime music afficionado.
Some soundtracks you might also like may include:
Nausicaä of the Valley of the Wind
The Weathering Continent
Metal Armor Dragonar
Heroic Legend of Arslan
Omohide Poro Poro
Sailor Moon R Symphonic Poem
Evangelion
Macross Original Soundtrack (1983)
Millenium Actress
Please Save My Earth (Hajime Mizoguchi/Yohko Kanno)
Rah-Xephon
Utsunomiko
There are so many others, too, but these are some of my favorites for complex and involving scores. Yohko Kanno is great if you love Jazz. The Cowboy Bebop music has a lot of Jazz tracks. Nausicaä's soundtrack is ethereal--I had an out of body experience the first time I heard it, head rushes and all sorts of weird sensations in the cranial area.
I host a weekly Sunday night program called Adventures in Anime Music on a Connecticut radio station, WQQQ-FM, where I feature a lot of this music. Coming up on 8 years with that radio station. It's also hosted on the net and Toonradio.net carries a syndicated version of the show.