Nick Lachey and Jessica Simpson, Newlyweds

The popular reality show -- which aired on MTV from 2003 to 2005 -- chronicled the couple's marriage from their post-wedding honeymoon phase to squabbling as her success eclipsed his own. He blamed the intensity of the show, in part, for their divorce in November 2005. She disagreed: "It made me understand what marriage is... We enjoyed watching those episodes, and that will always be a time I cherish."