Dana Stevens delivers a superb biography of silent film comedian Buster Keaton in Camera Man that isn’t just a book but a book-length essay. Buster Keaton or Charlie Chaplin? Anyone talking about the great silent film comedy stars start with one of the two. They both have their own quirks which is what makes the debate so hard. After all, the list of the best comedy movies of all time is one that features a…"Camera Man by Dana Stevens"