Fincher is certainly no art house director. He makes big-budget movies with stars like Brad Pitt or Ben Affleck. He is kind of like Steven Spielberg - a director so talented in the craft he elevates rater middlebrow material to be uniquely enjoyable. Fincher just gets a bit more respect because he is "dark". But dark does not mean deep. For example Seven is really quite silly and contrived, but his excellence at directing makes us forget that.