Natalie Wood during a pool party in the 1960s, looking stunning in a bikini.

Carol, oh Carol! The 1969 movie Bob & Carol & Ted & Alice explored the topics of faithfulness and honesty in marriage, and at the conclusion it showed a more free-spirited couple trying to switch wives with their more traditional friends. The stakes suddenly seem a little higher when you learn that Natalie Wood, the sexy woman in a paisley bikini, is involved. Wood portrayed Carol, a woman who had made up her mind to tell her husband Bob (Robert Culp) everything, even about their extramarital affairs. Ted (Elliott Gould) and Alice (Dyan Cannon) weren’t too fond of the concept, but Alice demands to switch partners in one of those real-life movie-world intellectual exchanges. It works for a little while before failing.