stephen fry documentary bipolar

Where can I get more information about Ben Stiller and his bipolar personality? And other celebrities .. Stephen fry?
Be fry Stephen recently made a documentary about him, and I'd like to see, where can I get it? And I know that Ben Stiller recently admitted, I wondered if she ever shared her story? What about Sylvia Plath and others?
There was information on the BBC website: http://www.bbc.co.uk/health/tv_and_radio/secretlife_index.shtml and I understand that the two-part documentary can be downloaded from a number of streams of bits.
Stephen Fry : Secret Life of the Manic Depressive