It's hard to recommend this film if you're looking for non-stop laughs. The humor is hit- and-miss, with far too many misfires. But there's still a lot going for it, especially, a stellar cast who appear to be game for anything. Peter O'Toole proves he can be very funny. Peter Sellers as a lecherous psychiatrist, with a Prince Valiant wig, and a Valkyrie wife is a character right out of Woody Allen's comic sensibility. Woody himself is here, refining and polishing his nebbish persona so convincingly, that many viewers assume he's not acting at all. His assignment, when hired to write the film, was merely to gather a collection of beautiful women and send everyone off to Paris.
There is a bevy of beautiful women here. Paula Prentiss gets the most obviously outrageous role: a suicidal poetry-with-a-social-conscience writer who's also a performer at the Crazy Horse Saloon. The exquisite Capucine shows off her remarkable flair for physical comedy. Ursula Andress doesn't have to do anything other than show up in a bikini, but even she turns out to be a delightful comedienne. Romy Schneider doesn't fare as well. She looks amazing, but her character is cloying. She does shine, however, in the hilarious English-as- a-second-language class sequence.
There are some other gems: The nighttime courting below the window, the group therapy sessions, the library bully. The film comes to life at the end when it turns into pure slapstick. It contrives to assemble all the characters in a French château, with everyone chasing after each other in some cleverly devised sight gags. Just don't look for consistency, coherence, or continuity in this film. They don't exist. Enjoy it, instead, as a series of comic set-pieces.