When Wilco last played Houston in 2005, their critically acclaimed album, A Ghost Is Born, had recently been released, and they rode into town on a wave of support. 2007's Sky Blue Sky divided critics with its mellow, meandering rock, a far cry from the challenging and dynamic sounds of the Chicago-based band's previous albums. As if to directly address these critics, Wilco opened Friday night's stand at Verizon Wireless Theater with some of the......