Barack and Michelle Obama have lived an extraordinary life and spent eight years living in the White House.READ: Michelle Obama reveals daughter Sasha's unique living situationThe well-known couple had an incredible time during this era, and have remained great friends with their staff.Over the weekend, Michelle took to Instagram to mark an end of an era, as their devoted butler announced that he was retiring from his job after 47 years of service. VIDEO: Michelle Obama opens up about life