I saw this back in 2008 but didn't recall much past the opening scene, where Day Lewis is prospecting with a pick. Excellent, but somehow not totally satisfactory; perhaps the vacuity of get-rich misanthropes is laid on a little too thick. #175 in the IMDB top-250.
Roger Ebert: three-and-a-half stars. Manohla Dargis. Dana Stevens: "loosely adapted ... from Upton Sinclair’s 1926 novel Oil!".