(Cover) - EN Showbiz - Michael Douglas and his wife Catherine Zeta-Jones enjoyed a boat ride in the South of France yesterday with rocker Jon Bon Jovi.

The couple joined the singer along with a group of friends as they sailed along the French Riviera waters in St. Tropez.

Michael looked in great health after recently battling with throat cancer and the Welsh beauty appeared to be happy and relaxed following her admission to suffering with Bipolar II disorder earlier this year.

Jon reclined on the boat with his shirt buttoned down low and relished in the company of his celebrity friends.

Catherine, 41, has recently filmed scenes for upcoming movie musical Rock of Ages which also stars Tom Cruise and Russell Brand.

She plays a villain who is "out to stop rock n' roll from poisoning Los Angeles," according to director Adam Shankman. (C) Cover Media