I find it impossible to fathom the critical savaging this film has received. Its Rotten Tomatoes rating  barely exceeds Vince Vaughn ’s shoe size, and yet, by my count, Couples Retreat  delivers on all of its promises. It’s the funniest movie about mating since Knocked Up .
Written by Vaughn, Jon Favreau  and Dana Fox , the story concerns four suburban couples in various states of marital meltdown. Dave and Ronnie (Vaughn and Malin Akerman ) have two young sons. They’re the most solid of the bunch, though Dave’s been putting in so many hours at his video game store, he’s not really there for her when Ronnie wants to discuss home renovation details.
Hanging in there but slowly growing apart are high school sweethearts Joey and Lucy (Favreau and “Sex and the City”’s Kristin Davis ). Shane (Faizon Love ) is already divorced and dating Trudy (Kali Hawk ), a mall clerk half his age with twice his energy.
The driving forces behind the island getaway are Jason (Jason Bateman ) and Cynthia (Kristen Bell ), whose marriage is threatened by their inability to conceive a child. They have a peculiar habit of turning their problems into PowerPoint presentations rather than simply telling their friends about them, and, during one such session, the pair makes a pitch for the lot of them to enjoy some downtime at a seaside resort called Eden. If four couples sign on, they explain, the rate is halved. Also mentioned in passing is the fact that the place offers “couples skill building.” Jason and Cynthia admit they plan to work on their relationship but assure the others they’ll have the option to kick back and veg out.
The truth is revealed in a priceless early scene. At dinner, an excited Dave tells his friends and the resort’s official greeter (Peter Serafinowicz ) that he plans to party late into the night and crash the following day. Imagine his surprise — and that of the other couples who have not come to build their skills — when all are informed mandatory therapy commences at 6:30 a.m.
So much for paradise. Life on the island quickly becomes a living hell of counseling sessions and goofball trust exercises, all presided over by Marcel (Jean Reno ), the island’s ponytailed New Age guru and “couples whisperer.” One exercise takes place in deep water, where Dave learns the hard way to trust his instincts rather than his new teacher when he’s attacked by sharks he is guaranteed pose no threat.
The gags are gut-busting for the most part. High points include perhaps the most inappropriate yoga lesson in movie history, an extremely ill-timed room-service delivery, an epic “Guitar Hero” showdown and a just-try-not-to-laugh series of scenes involving a preschooler with a fondness for christening showroom commodes. As in any film featuring Vaughn, however, the real payoff is the dialogue. If there’s such a thing as a verbal virtuoso, he is one. Nobody motormouths surreal one-liners and non sequiturs with a fraction of the guy’s panache. He’s a poet of comic patter.
Couples Retreat marks the directorial debut of Peter Billingsley  (yup, Ralphie from 1983’s A Christmas Story ), who’s been Vaughn’s producing partner on a number of projects. If you ask me, he’s made a film his first time out that’s funnier than some comedies overseen by genre vets as revered as Judd Apatow — Forgetting Sarah Marshall , for example. Life on the island may not have proved everything our four couples dreamed, but forget what you’ve heard: Billingsley’s freshman effort is a tropical treat.