If it distresses you to see an aging genius like Buster Keaton in beer commercials and beach party movies, The Awakening, an episode of Douglas Fairbanks Jr.'s Rheingold Theatre series, is a good antidote. In one of the few purely dramatic roles of his career, Keaton stars in a dark political allegory that, while verging on heavy-handedness, is handsomely produced, excellently ...