My brother loves Pearl Jam and all things Eddie Vedder, so he gave it a solid review. I've not heard much of it though.
In a similar vein, check out the new Allison Krauss/Robert Plant album-fantastic. Also the not so new Mark Knopfler/Emmylou Harris album.
As for alt-country (definitely more toward the twangy end of things): the Old 97s and the Derailers.