Big time! They are also the most demanding of their staff. While with Ernst & Young I worked under a Vietnam War chopper tail gunner who became a partner in E&Y Healthcare IT. He said that after his discharge he was approached by Anderson. He told them that after 4 years in the Army he'd be damned if he'd join the Marines.
I had limited experience with them, but I understand than they tend to be very structured in their methodologies and discipline in IT. (Which is of course very good for very large projects.) One client that I worked with disparagingly called them Anderson Androids.