This screens as part of the 'A Little Taste of Robert Altman' season at the Prince Charles. Here are the full details.
Chicago Reader review:
Robert Altman's masterful 1974 study of the psychology of the compulsive gambler. Elliott Gould, loose, jocular, and playful, and George Segal, neurotic, driven, and desperate, are really two halves of the same personality as they move from bet to bet, game to game, until they arrive for the big showdown in Reno. As in all Altman films, winning is losing; and the more Altman reveals, in his oblique, seemingly casual yet brilliantly controlled way, the more we realize that to love characters the way Altman loves his, you have to see them turned completely inside out.
Here (and above) is an extract.