Instagram/Barack Obama & Mark Hamil Celebrity Obama and Mark Hamill team up on Star Wars Day to unveil the "Obamalisk" and promote the upcoming Obama Presidential Center as a "Force for change." May 5, 2026 AceShowbiz - On Star Wars Day, Barack Obama joined forces with actor Mark Hamill, best known for portraying Luke Skywalker, to mark the occasion as well as the upcoming launch of the Obama Presidential Center in Chicago.