It's not so much that he's doing a bad Winston Churchill. He's doing a bad Alfred Hitchcok doing a bad Winston Churchill.
(NOTE: Hitch's name is spelled wrong so I'm not given those **** for the last syllable of his name by the auto-censors on BWW.)
But I don't think he sucks or is even "off" in the movie. If this were an impersonation contest, he would lose. And that's what most criticisms I've seen have been focusing on: the superficial (I know, SHOCK!). Who the hell cares? I don't think anyone is really nailing their real-life counterpart in the film, with the exception of Helena Bonham Carter, who really is channeling the Queen Mum, particularly in her later scenes. It's not just the clothes and wigs, it's her physicality, accent, etc. She wins the impersonation contest in this movie.
Churchill is by far the most recognizable figure in the film, because of all the historical newsreel footage and audio tapes we've heard since junior high history classes.
But if recognizability is why you're going to see this movie, just skip the film and go to Madame Tussauds. No sense in spoiling the fun with an actual story and dialogue. Let's just see who looks and acts most like their real-life counterpart.
We'll call it British History Idol. People could judge that.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22