By Stephen Farber Seven-time Oscar nominee Richard Burton continues to have an intriguing afterlife, four decades following his death. At this year’s BAFTA awards, a movie about his early life, Mr. Burton, earned a nomination for best British Film. Mr. Burton, directed by Marc Evans, was also one of the audience favorite films at January’s Palm Springs International Film Festival. It opens in theaters this week and, aided by a strong cast, should appeal even to audiences who have fuzzy recollections of the once notorious actor. The film begins with a quotation from Elizabeth Taylor (who married Burton twice after a scandalous, heavily publicized affair that began during the shooting of Cleopatra in 1962). In it, Taylor states that Richard never would have found fame and fortune without the efforts of his adoptive father, Philip Burton (superbly played by Toby Jones in the film).…