good directors with weak visual chops?

What are some directors you can think of who you think are good despite their weak visual chops?

For me, I think Kathryn Bigelow belongs in this camp. She's by no means terrible, just somewhat bland and unremarkable visually. Admittedly, I've only seen her most recent batch of films so perhaps her older stuff was better but today, she seems content with just using a lot of boring. pseudo-documentary style handheld camerawork and muted, brownish colors.

As far as that gritty, cinema verite style is concerned, folks like Alfonso Cuaron and the Safdie brothers have made far better use of it IMO. Bigelow's films are good but not because of her visual style (Bigelow herself, though, is fine as hell).

What's yours?