. . . . . . . . "Other presenters include Bigelow's ex-husband, Avatar creator James Cameron, whom she beat for Hollywood's top directing prizes a year ago, and such stars and filmmakers as Steven Spielberg, Francis Ford Coppola, Clint Eastwood, Leonardo DiCaprio and Helen Mirren.Current Oscar nominees Colin Firth, Natalie Portman, Melissa Leo and Jennifer Lawrence also are on the presenter list for the guild aw" . .