[Destroysall]

Some great recommendations already posted; I'll opt for something different.
 
Due to a lot of stressful and even depressing events in my life as of late, a friend of mind introduced to me Meditation: a method used in obtaining and dwelling in inner peace and sanity. Ambient music is great to listen to during any complex time I feel. A website I use to help meditate and to even learn some music from is Calm.
 
Try it: http://www.calm.com/
 
Cheers,
Chris

 

[Music Alchemist]

My usual genres of choice are artsy post-metal and avant-garde metal, sludge, doom and drone, but I've been getting into ambient music recently. I don't know that many ambient artists who do strictly ambient, and that's a problem.

Some of these electronic musicians are super-prolific and produce a lot of stuff across a huge range of genres, and I'm really just looking for more ambient stuff to feed my brain.

I'm a big fan of Atrium Carceri ever since I heard his stuff, it's wonderful, and I've always loved Akira Yamaoka's work on the Silent Hill games. But I don't have much of a reference point on this type of music--I know two huge metalheads who give me plenty of metal recommendations, but I really like ambient music.

I just wish I knew more artists!

 
Steve Roach is my favorite ambient artist. You can view his extensive discography (with free samples) here.
 
I recommend starting with his 2003 release (of which I have an autographed four-disc edition) Mystic Chords & Sacred Spaces.
 
It's funny that you mentioned Silent Hill because I was just discussing the soundtracks for Silent Hill 3 and 4 with someone else.
 
Edit: Can't believe I didn't notice this thread was published in 2008!

 

[daniel_hokkaido]

Kyle Bobby Dunn is my main man ambient wise. 
 
A kind of ambient drone in the guise of soporific classical. 
 
https://soundcloud.com/studentsofdecay/sets/kyle-bobby-dunn-infinite-sadness
 
http://pitchfork.com/reviews/albums/19379-kyle-bobby-dunn-kyle-bobby-dunn-and-the-infinite-sadness/

 

[Johnnyhi]

Try some of this... 
 

 

 
 
 
    
 
 

 
 
   
 
 
if not try this...