Martin King—he hasn't used the "Dr." or "Luther" or "Jr." for decades now—is living proof that even legends can get tired of being legendary. Pacing his spartan office at MSNBC's studios at Rockefeller Center on a dreary Wednesday in mid-January, King is pecking a text message back to his daughter about dinner plans tonight. It is King's 85th birthday and his family and friends are holding a party at the forever popular Sylvia's in Harlem, but his first priority is his new 8 p.m. show on MSNBC.