ET's Mark Steines is on location in Bora Bora at the breath-taking St. Regis Bora Bora Resort that Jon Favreau and Vince Vaughn filmed their hilarious new comedy 'Couples Retreat.'
Mark offers an inside look into the upcoming film and reveals what to expect from his ET interviews with the 'Swingers' stars.
'Couples Retreat' -- starring Vaughn, Favreau, Jason Bateman, Kristen Bell, Kristin Davis, Malin Akerman and more -- centers around four couples who travel to a tropical island for a vacation but are forced to work on their marriages and participate in therapy sessions. Also, keep an eye out for former ET correspondent Carlos Ponce, who plays the couples' shirtless-and-muscular yoga instructor.
The hilarious new comedy hits theaters Oct. 9.