It's a tough act to balance comedy and drama ... especially if you're balancing themes of suicide and familial estrangement with humor and heart. Director Craig Johnson ("True Adolescents") finds just the right balance for the dramedy "The Skeleton Twins," mixing heartache with hilarity, and giving "Saturday Night Live" alums Kristen Wiig and Bill Hader time to flex their dramatic muscles as estranged suicidal siblings who reunite and find commonality.