Even the cops can't get enough Wilco. While our Chicagoist photographer sat in line waiting to get into Friday night's show, a CPD cruiser drove by by with the intro to "I Am Trying To Break Your Heart" planking away on it's megaphone, eliciting a roar from the crowd. The band is playing a 5-night stand at The Riv that looks to span the group's collected works. Tonight's show is being broadcast live on......