Writer/director Patrick Wang (In the Family, The Grief of Others) is one of the best American filmmakers working today; with his brilliant two-part drama A Bread Factory newly available on digital and coming to disc next month, he’s here to praise the unique beauty of Electra Glide in Blue, James William Guercio’s 1973 procedural starring Robert Blake as a motorcycle cop with an unbending moral code. Your genial host Norm Wilner did not see this one coming.