The Rum Diary, based on the eponymous Hunter S. Thompson novel, is a labor of love. Johnny Depp, a friend of Thompson’s, personally asked Bruce Robinson to come out of retirement to write and direct the movie. Robinson, who directed the masterful Withnail & I, was also close with Thompson (their mutual friend is illustrator Ralph Steadman, who worked on the art for Withnail as well as Fear and Loathing in Las Vegas). But heartfelt intentions do not necessarily translate into quality. Even with a long running time and lack of substance, The Rum Diary is a (mostly) entertaining celebration of journalism’s greatest madman.