This is one of my favorite movies of all time, and should have won best picture over "American Beauty" IMO. I also love the payoff of this scene at the end, where Lowell and Don have another blow-up, and this time Mike Wallace sides with Lowell, "You fucked up, Don": http://www.youtube.com/watch?v=vJfyFoZcetY

A fantastic scene. When staging a confrontation, I always look to this scene as a reference, both for texture as well as exposition. It also helps that Michael Mann's films have some of the best modes of exposition.