+1 on these guys...
Im not a huge metal fan.....but I really rate these guys
[url=https://www.youtube.com/playlist?list=UUiYfyv1V_SWbXD2luERH1nQ]Conan[/url]
If you want doom you should listen to bands like Ahab, Mourning Beloveth and Catacombs. It doesn't get more doom than funeral doom.
http://www.youtube.com/watch?v=SGfOypah35U
http://www.youtube.com/watch?v=gQD4UMSb0ww
http://www.youtube.com/watch?v=I84762UVKSg