Couples Retreat (2009)

Malin Akerman, Kristin Davis, Jon Favreau, Vince Vaughn

Dave and Ronnie, Jason and Cynthia, and Joey and Lucy are close. The group used to include Shane and Jennifer, but they divorced and she's gone. Jason and Cynthia announce that their marriage is in trouble, and they beg their friends (and Shane's young girlfriend) to join them on a couples' retreat,