Legendary rapper and producer MF DOOM is covered in this documentary. Your favorite rapper's favorite rapper. DOOM is a British-American rapper. He performed and released music under several stage names, most notably MF Doom (stylized in all caps). DOOM debuted during hip hop's golden age of the late 1980s and became a major figure in underground hip hop of the early 21st century. Upon his death, Variety called him "one of the most celebrated, unpredictable and enigmatic figures in independent hip-hop". People have called him The Phantom of the Opera of Hip Hop.