But not on purpose, surely? I got the impression that it took itself [way too] very seriously.
For a Superman movie, perhaps. Compared to Nolan's Batman... That's an entirely different story. TDK doesn't even feel like a comic book movie most of the time. It's basically a character driven crime drama with thrilling action sequences.
I agree. I love all three films even though I have pacing issues with them.
I have often thought that Batman would be great on television as a serious, crime-detective series--a less formulaic CSI style show. Even with the villains, it could easily be done effectively on a television budget.
I enjoy Arrow, but it is still not the Batman series I`ve always wanted.