Christopher Orr is just wrapping up an impressive task--looking back at the films of Joel and Ethan Coen. It's an impressive and well-reasoned endeavor.
I would rank Miller's Crossing their greatest film, and a better gangster movie than Goodfellas. I have not seen A Serious Man, Burn After Reading, The Man Who Wasn't There, Intolerable Cruelty, or Inside Llewyn Davis. I have little or no interest in doing so, and I'm sure that this makes me ridiculous, but oh well.
The worst film by the Coen brothers is, of course, The Ladykillers. Good God, what a terrible film--albeit one with some hilarious characters and a lot of promise. The Coens don't have bad ideas, nor do they fail as filmmakers. Sometimes, the material does in a film, no matter what.