I'm in that mood...depressed really...I'm looking for some good videogame ambient-type music to listen to...everyone please post their favorite songs from videogames
Hate to say it...But Perfect Dark. Chicago, Datadyne...Really good ambient stuff there. And I second the Silent Hill 2 OST, one of the best soundtracks ever.
Anything from The Dig - while not "ambient" from the traditional sense, it's quite a mellow score, and serves to set a mood more than anything else. Completely symphonic, too. Try the opening track, "Mission to the Asteroid".
Yasunori Mitsuda's "Sailing to the World" is also pretty good - extremely similar to Chrono Cross. If you like CC's score, you will LOVE this. Here are some samples. Seriously, it's great stuff.
EDIT: it also wouldn't hurt to check out the best water level music thread, as a lot of water levels have quiet, ambient music. "Dire Dire Docks" "Aquatic Ambience" and Maridia Rock Underwater Area" all fit the bill quite nicely.