Jim Carrey stars as Joel, a muddled New York commuter who - on a wintry Valentine's Day - impulsively takes a train in the opposite direction. Wandering Montauk's desolate beach at the tip of Long Island, he spots Clementine - that's Kate Winslet. The attraction is mutual; a sweet romance develops. Soon they're making snow angels on the frozen Charles River in Boston.

Then the timeline goes awry. It's three days before Valentine's Day. Apparently, Joel already knows Clementine but she's visited a company called Lacuna and had him eradicated from her memory. Distraught, he makes an appointment to have his memory of loving her erased. Cautiously asking the doctor (Tom Wilkinson) about the inherent danger, he's told, "Technically speaking, the procedure is brain damage." But the technicians (Mark Ruffalo, Elijah Wood) are ready, enmeshed with receptionist (Kirsten Dunst) in their own subplot. Yet, as his brain goes into rewind, Joel discovers that some memories, positive and negative, may be worth keeping.

Cast-against-type, Carrey and Winslet deliver poignant performances. Gondry's striking visual ingenuity, implemented by cinematographer Ellen Kuras, is superbly suited to Kaufman's cleverly intricate and ambiguous narrative on relationships. On the Granger Movie Gauge of 1 to 10, "Eternal Sunshine of the Spotless Mind" is a strange, surreal, intriguing 9. While the title phrase comes from Alexander Pope's poem "Eloisa to Abelard," it's a terrific mind-trip!