- Because Jack Gyllenhill's growth background is far away from his role, he trained in the "Cowboy Training Camp" for a month.
- Heath Ledger, from Western Australia, is quite similar in temperament to Western Americans, but in order to have both "shape, spirit and sound", he especially learned a vulgar Texas cowboy accent from his teacher.
- Heath Ledger and Jack Gyllenhaal were particularly involved in the shooting, and Heath Ledger almost broke Jack Gyllenhaal's nose.
- In the film, Heath Ledger and Michelle Williams, who seem to be close together, produced a spark of love in their collaboration.
- During the filming, Ang Lee tried to get the sheep to drink the water in the stream all day long, but the sheep would not drink any live water except for the water in the pond and dam, so he had to give up the shot in the end.
- When "Brokeback Mountain" was first released, it was banned by theaters in conservative regions of the United States, and conservatives and religious groups jointly boycotted its Oscar sprint.
Brokeback Mountain behind the scenes gags
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Jolly Minister: You may kiss the bride - and if you don't, I will.
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Jack Twist: [looking over at Ennis in the firelight; he has laid back and is looking up at the stars, smiling] Anything interesting up there in heaven?
Ennis Del Mar: [for the first time in a long time, content] I was just sending up a prayer of thanks.
Jack Twist: For what?
Ennis Del Mar: [with a wink and a smile] For you forgettin' to bring that harmonica. I'm enjoyin' the peace and quiet.