I really can't say it much better than Bob Boilen's post on the All Songs Considered blog.
Despite my love for Nels Cline's smoldering guitar work on the last two Wilco albums, Jay Bennett's influence on and contributions toward prior Wilco recordings (particularly Yankee Hotel Foxtrot) should be massively credited for the band's propulsive success circa 2003-2004. His production skills and wide-ranging ability as a multi-instrumentalist are matched by very few musicians; a little known fact that is probably best recognized by his colleagues in the Chicago area, and also die-hard Wilco fans. R.I.P.
I'll be posting later this week on my Sasquatch experience at The Gorge in Washington State, so stay tuned for a festival round up. Should be a good one, as I've never come close to experiencing a sensory overload of this magnitude for such a lengthy period of time. The visually stunning backdrop to the main stage (A.K.A. the heart of The Gorge and the Columbia River) will be forever burned in my memory. The music wasn't too shabby either.