Unlike most movies which try to illustrate drug and hallucinogenic experiences by using a bunch of jarringly bizarre and heavily symbolic images randomly strung together, Chappaqua struck me as having a strange emotional continuity throughout -- that is, every odd new scene and image that appears somehow feels perfectly appropriate when it occurs. It's as if Rooks not only put together visions and sounds that evoked his actual emotions and experiences, but also managed to assemble them in the order they happened, one flowing seamlessly into the next even though there is no obvious connection between them. In fact, the film strikes me as being not so much hallucinogenic as dreamlike, another state rarely captured well on film. So this is definitely not a film for those who insist that movies should explain, clearly and completely, exactly what they're all about. But if you want a chance to ride on the meandering currents of another person's mind, then you might give this film a try.