Actor Christopher Tocco, above, plays Jack Cole in a backstage scene with the young Gwen Verdon in FX’s blockbuster eight-episode docu-drama, “Fosse/Verdon.” “Fosse/Verdon”‘s backstage scene between Verdon and her mentor Jack Cole is preceded by a Jack Cole jazz number vividly choreographed by “Hamilton” choreographer Andy Blankenbuehler, who is a co-producer of this series. Out with ...