Tim Robbins Director, Screenwriter, Producer Hank Azaria Marc Blitzstein Actor Rubén Blades Diego Rivera Actor Joan Cusack Hazel Huffman Actor John Cusack Nelson Rockefeller Actor Cary Elwes John Houseman Actor Philip Baker Hall Gray Mathers Actor Cherry Jones Hallie Flanagan Actor Angus Macfadyen Orson Welles Actor Bill Murray Tommy Crickshaw Actor Vanessa Redgrave Countess LaGrange Actor Susan Sarandon Margherita Sarfatti Actor Jamey Sheridan John Adair Actor John Turturro Aldo Silvano Actor Emily Watson Olive Stanton Actor Bob Balaban Harry Hopkins Actor Jack Black Sid Actor Kyle Gass Larry Actor Paul Giamatti Carlo Actor Barnard Hughes Frank Marvel Actor Barbara Sukowa Sophie Silvano Actor John Carpenter Power - William Randolph Hearst Actor Gretchen Mol Marion Davies Actor Harris Yulin Chairman Martin Dies Actor Gil Robbins Congressman Starnes Actor Corina Katt Ayala Diego - Frida Kahlo Actor Lydia Dean Pilcher Producer Jon Kilik Producer Louise Krakower Executive Producer Frank Beacham Executive Producer Allan F. Nicholls Executive Producer Allison R. Hebble Associate Producer Jean-Yves Escoffier Cinematographer Geraldine Peroni Film Editing David Robbins Original Music Ruth Myers Costume Design Douglas Aibel Casting