This month Mill Creek is releasing a couple more of its actor-themed double-feature Blu-rays sets. One of these includes two films starring George Clooney—the 2010 assassin drama The American, and the 2008 football comedy Leatherheads co-starring Renée Zellweger & John Krasinski. The American (2010) After his mission in Sweden goes awry, assassin Jack (George Clooney) …