I was handed this clip from a 2005 HBO documentary titled Middle Sexes: Redefining He and She (imdb). This is pure gold: loudmouthed “straight” males are guaranteed to feel stupendously uncomfortable. All of this is based on a study conducted at University of Georgia in 1996. The study showed that 54% of a group of homophobic, self-described heterosexual men were, while denying it, sexually aroused by watching gay porn. Non-homophobic, heterosexual males who participated in the study revealed little signs of arousal.
Watching the whole film is strongly encouraged. It provides a well presented summary of how traditional (western) views on gender and sexuality are hideously alienating and evil, based on examples from all over the world.
At the time of writing, a split-up version of the 54 minute piece is available in fairly decent quality on Youtube.