John Barrowman: The Making of Me Episode 2 (2008)

John challenges scientists to explain why he is gay. For as long as he has been aware of his sexuality, John has been convinced that he was born gay and firmly believes that homosexuality is not a choice. He put himself through the mill for the programme, among other things conquering his claustrophobia to have a brain scan and subjecting himself to testing of his reaction to sexual stimuli.