Grant’s Withnail, a combination of old boy pomp, contempo degeneracy, and stagey narcissism, lies, bamboozles, mooches, saturates himself in whiskey, pints and wine, and manages to stay at once angry and self-pitying throughout. He is a miracle. He carries on, rages ahead, all the while increasing his best friend’s anxiety while Marwood (Paul McGann) tries desperately to hang onto some semblance of reality. The walls are closing in and Withnail can’t get an audition. Marwood seems on the verge of another one and this frustrates “With”....