http://www.musicplasma.com/ is a great site for finding similar artists - you just input the artist/band you like and a diagram of musically similar people comes up.
Well heres a few singersongwriter you'll love like Damien,
-Jeff Buckley
-Elliot Smitth
-The Flaming Lips
-Iron and Wine
In my opinion all these bands show passion and pain in their stuff and giving them a listne dusnt hurt! :)
I agree with MrChimky, especially Jeff Buckley, alot of his stuff has been re-released with extra tracks, dvd features,been digitally remastered.... etc etc now would be a good time to check his stuff out. Don't expect any new stuff from him in the future though.......