“This is a real bad movie,” said the late, great thumb-pointer Roger Ebert, adding, “if I had totally forgotten it I’d be a happy man.” (Perhaps “I want my two dollars back” would have been funnier.) His co-Caesar at the time, Gene Siskel, also turned his thumb down on national television. It lasted only a month in theaters, but Better Off Dead gained new life, and a cult following, in rentals. Today, this semi-black comedy is a fan favorite and the best seller of John Cusack’s teen movies.