Tombstone featured an incredible cast of some of the greatest living actors, but the film was anchored by the delightful friendship between Wyatt Earp (Kurt Russell) and Doc Holliday (Val Kilmer).

A documentary chronicling the highs and lows of the life and career of US actor Kilmer has been described by critics as "poignant" yet "bittersweet". Val, which has just debuted at Cannes Film ...