Timothy Spall discusses his lead role as the eccentric British painter J.M.W. Turner in the film “Mr. Turner.” The film delves into Turner’s anguish at the death of his father, the housekeeper he takes for granted and occasionally exploits sexually, and Turner’s close relationship with a seaside landlady who he lives with incognito in Chelsea, where he dies. Mr. Turner is now playing at City Cinemas 1,2,3, the Angelika, and Lincoln Plaza.