I'm glad I came in here, I'm definitely going to check out that Krauss/Plant one -- I'd heard vaguely of it. I'm more on the Krauss fan side.
I came in to recommend Richard Buckner. I guess he falls in the folk, maybe alt-country category. Merge Records
MySpace.com - Richard Buckner - New York - Country / Americana - www.myspace.com/rchrdbcknr
Not the cheeriest stuff, but poignant.