Inovative and progressive.
The beginning seems like it will be only an inocous story of romantic entaglement, with passing commentary on the modern suberban upperclass, but it soon turns into a weave of interesting existential and psychological elements.
Some resembling elements of The Graduate, but certainly a stand-alone film.
Superb acting. Some strange editing choices, but contains some very interesting and successful avant garde directional choices, as well as really impressive special effects for 1969.
Director: Elia Kazan
Main Cast: Kirk Douglas, Faye Dunaway, Deborah Kerr
Not only does the trailer totally suck, but it's jam-packed with spoilers, so I'm not posting it.