Producer Mary-Ellis Bunim, who along with Jonathan Murray pioneered the reality genre with the creation of MTV's The Real World, died Thursday of cancer. She was 57. Bunim's partnership with Murray also spawned such reality staples as Road Rules, Making the Band, The Real World/Road Rules Challenge and Fox's The Simple Life. "Mary-Ellis was a one-in-a-million partner and friend, and I will always treasure our incredible years of collaboration," said Murray. "Even as the family at Bunim-Murray Productions mourns her loss, we will honor her memory by remaining committed to her ideals of creativity, adventure, and excellence, both on the screen and in our lives." Bunim is survived by her daughter, Juliana.