Eerie, Ethereal, Moody, Involving Soundtracks

I think you'll find the following fit your bill:

The Mission (Morricone)
La Otra Conquista/The Other Conquest (Zyman & Reyes)
Todo Sobre Mi Madre (Iglesias who scores for Almodovar)
Thin Red Line (Zimmer)

...and if you like Knopfler, check out "Last Exit to Brooklyn" - talk about eerie and moody.

...and Bultacos and Montesas and CZs...man, what a time that was. Elsinore and Perris were still out in the sticks and suburban sprawl was still twenty years off. None of us thought that McQueen would ever crash, much less die. Now there's tract homes up and down the high desert and Steve's been gone almost twenty-five years. But we'll always have "On Any Sunday" and that wonderful scene from "The Great Escape."

No Bonnies, Lightnings or Commandos in my garage right now, but I've been lucky before.

Another OST suggestion: Wings of Desire from Wenders' film of the same name.