‘Generation Iron’ Debuts With Year’s Best Opening For a Non-Concert Doc

With One Direction: This Is Us continuing to rake in seven-digit figures at the box office, there’s still no real competition for the pop music doc-chart-topper. But there was a fairly surprising dark horse debut over the weekend: Vlad Yudin’s bodybuilding movie Generation Iron opened on 55 screens and with a total gross of $245k. That’s the best for a …