“American Exit” (**1/2 out of four) was a reasonably effective father-son reconciliation drama in which a dying father (Dane Cook) takes his estranged teenage son (Levi Miller) on a road trip to try and re-establish a relationship with him and make up for lost time before he dies but the road hits a few detours. Not as powerful or compelling as it could have been, and weakened by an unnecessary drug subplot involving Udo Kier, but made worthwhile by Cook’s strong and believable performance. This easily marks the best performance of his career and Claire Van Der Boom also has some touching moments as the boy’s mom.