I’ve enjoyed most of his performances (never saw the Cheney movie). Why can’t these folks just shut up and act?! Sadly, thrusting a microphone in front of someone automatically makes them (and their listeners) assume they have something cogent to say.
I thought he did a good job portraying Cheney’s demeanor and mannerisms. He certainly did look and talk like Cheney. You do come away from the movie with the sense that Cheney is a super-intelligent puppet-master. I did not think it was entirely a negative portrayal.