'Brokeback' focuses on a love affair between two sheep herders

The awards recognise mainstream media for their "fair, accurate and inclusive representations of the lesbian, gay, bisexual and transgender community".

"To end our 'Brokeback' journey here tonight is like coming home," said the film's Oscar-winning director Ang Lee.

"The fact is this: Brokeback Mountain has helped to change the world."

Actor Michael Douglas presented Ang Lee with the film award

"It is such a privilege and honour to have joined you, and all the people all over the world, who struggle for compassion and equality," said Lee, who received a standing ovation on accepting the award.

"When the world is made better for one gay or lesbian person, it's made better for everyone."

Other winners at the GLAAD awards ceremony in New York on Monday included US singer Melissa Etheridge and director Morgan Spurlock, for outstanding reality programme Straight/Gay.