I can totally see your opinion. In my opinion, Christopher Nolan is good at adding neat twists to what otherwise may have been standard crime thrillers (using Inception and Memento in this example) and does cool stuff with editing to change the way the audience percieves the audio and visuals together (Memento was when I really saw this), but his dialogue... kind of tends to suck. It tends to leave nothing to the audience to talk and debate about. The Prestige wasn't too bad at this, at least so I found it the last time I saw it, but The Dark Knight had it bad. That huge speech Gordan makes at the end could have been cut down to about two lines and it would have served the exact same purpose as that paragraph did.

In short- still like him, but he still has lots of improvements to make to his work.