Well, I'm going to jump in with a few things not Metal.
I would check out the following bands/albums:
Gridlock - 'Further' & 'Trace'. These are two phenomenal albums. I would start with Further, and then move on to Trace. Ambient, industrial meets IDM, where the ambient synth tries to pull you away and the drums lock you in place. Interesting effect. Definitely albums to listen to in a sitting, as they are such singular pieces. Wonderful stuff.
Mum - 'Finally We Are No One'. This is Icelandic pastoral electronic glitch pop(I use that word with much reservation) featuring twin sisters who sound like breathy dolls singing. The beauty of mum is that the sads are sad, and the happies/contents are happy/content, but the difference between the music is so small, really highlighting to me the duality of every emotion, and how the shifts and nuances between emotions are really just little twinges and turns of feeling, just how something affects you. A very good friend of mine summed up this album (upon first listen, it was on while we just were lying on my bed late one night) as 'what a relationship sounds like'. I think she's right.
Lamb - 'What Sound'. A very good trip-hop album. The interesting thing about them is their use of percussion in songs such as What Sound and Sweetheart. Interesting use of music stops and swells to create percussion, slightly more industrial while less alienating than other trip-hop notables such as Portishead or Sneaker Pimps (6 Underground notwithstanding). Plus the song Gabriel could make me cry if I listened to it long enough.
Bowery Electric - 'Lushlife'. Again trip-hop, more drone based. Just check out the songs Lushlife and Saved. Very good listens.
Suicide Commando - 'Mindstrip'. Just listen to Love Breeds Suicide. Just a great song, terror-EBM, almost an electronic interpretation of death growls. I hear the hurt and release when he screams 'love breeds suicide', and the pain with lines like, 'you were the reason for living... you were the searchlight for the living... why did it end? why did it end?" Just resounds in me. The entire terror-ebm genre is justified and exemplified in this one track. Then listen to 'Raise your God' and 'Body Count Proceed'.
Andrew Bird/Andrew Bird's Bowl of Fire - 'Weather Systems', 'The Mysterious Production of Eggs', 'The Swimming Hour'. The first two are by Andrew Bird, the third one is under the Bowl of Fire name. Really cool stuff, I would suggest just checking it out. Find songs like "action.adventure" from Weather Systems and "11:11" and "Why?" from the Swimming Hour.
I could keep going forever, but these are some interesting listens, especially if you don't normally listen to this stuff.
