I love Golden Smog. A supergroup comprised of members of The Jayhawks, The Replacements, Wilco (and a few others) that meet once in a while to record another batch of jangly/power pop/alt.country songs. So far they've managed four; and from The Byrds to Big Star - it's all there.
For me, the greatest thing about the band is this certain freewheeling spirit hovering around their sound and songwriting. Gary Lourson is reliably terrific, but I would argue that it's for Golden Smog (and not for Wilco or Uncle Tupelo) that Jeff Tweedy (actually no longer with GS) came up with his greatest songs. 'Silly' stuff like "He's A Dick" hits me a lot harder than anything off his recent releases. And his anguished acoustic ballad "Listen Joe" (from 2006's excellent Another Fine Day) is such a timeless classic.