Nolan is mediocre.
I've never met someone versed in film who thought Nolan was anything but adequate. I'm sure they're out there, but bear in mind most of "the kids" have been weened on a diet of Stephen Sommers and Michael Bay. We have a generation that thinks 300 is quality filmmaking and The Matrix is original. I wouldn't really invest too much time pointing out that Nolan can't even direct the action in his action movies.