hmm. "Sky Blue Sky," Wilco Even though Wilco have been throwing curveballs at their listeners for the better part of a decade, the new "Sky Blue Sky" might just be the band's most unexpected move yet. Dispensing with the buzzy, blurry electronics of 2002's "Yankee Hotel Foxtrot" and the opaque artiness of 2004's "A Ghost Is Born," Jeff Tweedy and Co. have fearlessly jumped headfirst into ... sun-dappled folk-rock. Good thing, too, because the album is a sparkling, clean-cut gem. Full of wide open spaces and lazily drifting clouds of guitar, much of "Sky Blue Sky" has a relaxed, dusky m