Cancer the Forbidden Cures
Cancer the Forbidden Cures is an informative documentary, with an excellent section on Essiac. There is also a great interview with the filmmaker, Massimo Mazzucco of Buena Onda Films - click here for that link, or to buy the DVD. The footage in this movie appears to be additional footage from the same filming that was used to create The Rene Caisse Story.
Not only are Essiac, Hoxsey, Gerson, etc. covered, but also Dr. Tullio Simoncini's theory that Cancer is caused by the candida fungus and can be treated with sodium bicarbonate.