HBO’s initial exploration of the life of Roy Cohn, CITIZEN COHN, arrived before the later, better-known ANGELS IN AMERICA, appearing in 1992. Though the 2003 miniseries featured prominent actors, this earlier production also assembled a noteworthy group of performers. Director Frank Pierson, who wrote COOL HAND LUKE and DOG DAY AFTERNOON, guides viewers through a story featuring James Woods, Joe Don Baker, Lee Grant,…