I knew I recognized the director's name... Mamet. (Cue the Richard Dawson voice) IMDB says! Glengarry Glen Ross, written by David Mamet. Man, I love that movie. Then there's The Untouchables, Wag the Dog, Ronin: his hand touched them all. Huh.
But back to this movie. It was fast and witty. Walt (William H. Macy) was horribly funny; to the point that I hope I never have to direct a movie. The focus, and the sincerity, that that man could fire off in any direction, at a moment's notice... *shudder* Like I said, horribly funny, and something I could never drum up. Ha! Actually, now that I think about it, sincerity might give you the wrong impression, and I can't capture it any better than Walt himself:
It's not a lie. It's a gift for fiction.