David Cronenberg says Christopher Nolan's Batman trilogy is ''mostly boring''.

The 'Cosmopolis' helmer slammed his fellow director's three action movies - 'Batman Begins', 'The Dark Knight' and 'The Dark Knight Rises', which star Christian Bale as the titular character - criticising the filmmaker for spending so much money on the franchise, which he believes simply portrays the superhero ''running around in a stupid cape''.

He said: ''I don't think they are making them an elevated art form. I think it's still Batman running around in a stupid cape. I just don't think it's elevated. Christopher Nolan's best movie is 'Memento', and that is an interesting movie.

''I don't think his Batman movies are half as interesting though they're 20 million times the expense. What he is doing is some very interesting technical stuff, which, you know, he's shooting IMAX and in 3-D. That's really tricky and difficult to do.

''I read about it in American Cinematography Magazine, and technically, that's all very interesting. The movie, to me, they're mostly boring.''

David also hit out at people who are trying to suggest 'The Dark Knight Rises' is a piece of ''supreme cinema art'' because he believes the superhero movie is mainly aimed at kids.

He added to Next Movie: ''A superhero movie, by definition, you know, it's comic book. It's for kids. It's adolescent in its core.

''That has always been its appeal, and I think people who are saying, you know, ''Dark Knight Rises' is, you know, supreme cinema art.' I don't think they know what the f**k they're talking about.''