Courteney Cox, 47, and David Arquette, 40, seemed like an odd couple from the start, but despite their differences this couple (pictured at a Hollywood premiere on April 11, 2011) stayed happily hitched for 11 years. Today, this former pair practically sets the standard on how former spouses should behave. Cox and Arquette separated in the fall of 2010 and in January, Courteney proudly told People.com David is "my favorite person in the world. No matter what happens in our future, he's my very best friend." (Sorry, Jen Aniston.) As if to prove it, Cox cheered him on during his Dancing with the Stars stint and they still co-run their production company, Coquette Productions, as well as harmoniously co-parent daughter Coco, 7.