Have you tried these websites?:

http://gnod.net/
http://music-map.com/
The first lets you put in 3 bands you like, and suggests similar artists, the second one maps out one artist in relation to others. The first one lets you do books, films too.

Also, there's http://rateyourmusic.com/
where you can rate albums out of five stars and it makes recomendations based on your ratings. It's time consuming, but very .

My suggestions would be
Tindersticks
Wilco - Summerteeth
Grandaddy - The Sophtware Slump
and also Mogwai - Happy Songs For Happy People , though maybe not that one as its actually quite dark electronic stuff , despite the name