I think Ledger was great as The Joker, and without him that movie would have been quite bad.
To me Nolan is a less skillful version of Ron Howard. They've even made some comparable films, like Memento and A Beautiful Mind (the latter wins hands down), and Interstellar and Apollo 13 (closer because Apollo 13 has a very sappy ending, but it still wins). Ron Howard's films are more deft, polished, and economical, however. He never wastes a scene, where Nolan's films always have 20-30 minutes that would have been better left on the editing room floor. Howard's the kind of director who has the discipline and the professionalism to take in an overhyped story like The DaVinci Code and put out a rock solid film interpretation.
The Cabin in The Woods struck me has having several possible metaphorical interpretations. It could be a representation of the mind of someone who watches a slasher movie in order to feed the atavistic bloodlust that dwells deep within, or it could be a commentary on the greed of the horror movie producers who reap large sums of money from the promiscuous generation of images of brutality. In any case, Cabin has more ideas behind it than any of Nolan's forgettable films, which is why I say it's better.
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Over the past week I saw two movies: Them! from 1954 and American Hustle.
Them! is really quite good. It holds up a lot better than you might expect. One of the cool things about it is that James Whitmore, who was the librarian Brooks Hatlen in The Shawshank Redepmtion is one of the stars. Like the best old sci-fi Them! is very grounded in science. Okay, so you have to accept the premise that radiation from the Manhattan Project has caused ants to mutate to gigantic size, but after that the story tries to follow the science to model their behavior. The movie also has a really good action ending, IMO. Unlike so many current sci-fi monsters, you can kill the giant ants in Them! with infantry tactics and regular old bullets, provided you have enough.
American Hustle was pretty good, I guess. I didn't love it because it feels like it's trying too hard to be a Martin Scorsese movie. I don't think Amy Adams is an especially good actress, either, I'm sorry to say, and Bradley Cooper is also just so-so. Christian Bale is good though. I realized how uninspired most of the acting was when Robert DiNero showed up for about five minutes and outclassed everyone else, with the possible exception of Bale.