Paris is a city that lends itself to daydreaming, to walking the streets and imagining all sorts of magic, a quality that Woody Allen understands perfectly. Midnight in Paris is Allen's charming reverie about just that quality, with a screenwriter hero named Gil (Owen Wilson) who strolls the lanes of Paris with his head in the clouds and walks right into his own best fantasy. Gil is there with his materialistic fianc e (Rachel McAdams) and her unpleasant parents, taking a break from his financially rewarding but spiritually unfulfilling Hollywood career--and he can't stop thinking that all he wants to do is quit the movies, move to Paris, and write that novel he's been meaning to finish. You know, be like his heroes in the bohemian Paris of the 1920s. Sure enough, a midnight encounter draws him into the jazzy world of Scott and Zelda Fitzgerald, Picasso and Dali, and an intense Ernest Hemingway, who promises to bring Gil's manuscript to Gertrude Stein for review. Gil wakes up every morning back in the real world, but returning to his enchanted Paris proves fairly easy. In the execution of this marvelous fantasia, Allen pursues the idea that people of every generation have always romanticized a previous age as golden (this is in fact explained to us by Michael Sheen's pedantic art expert), but he also honors Gil's need to find out certain truths for himself. The movie's on the side of gentle fantasy, and it has some literary/cinematic in-jokes that call back to the kind of goofy humor Allen created in Love and Death.The film is guilty of the slackness that Allen's latter-day directing has sometimes shown, and the underwritten roles for McAdams and Marion Cotillard are better acted than written. But the city glows with Allen's romantic sense of it, and Owen Wilson has just the right nice-guy melancholy to put the idea over. A worthy entry in the Cinema of the Daydream.