His batman movies were fine.
Man of Steel was directed by Zack Snyder. Nolan only provided story (didn't write it) and produced it. I never hold filmmakers responsible for their producing credits. They really don't get to make a lot of the major decisions, especially if they're just one of several producers, as was the case with that film.
Yeah, I don't see any of his films ever reaching that kind of terribleness.