- 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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Alma Beers Del Mar: You know, your friend could come inside, have a cup of coffee...
Ennis Del Mar: He's from Texas.
Alma Beers Del Mar: Texans don't drink coffee?
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Jack Twist: Ever notice how a woman'll powder her nose before a party starts, and the powder it again when the party's over? Why powder your nose just to go home to bed?
Randall Malone: Don't know. Even if I wanted to know, couldn't get a word in with Lashawn long enough to ask. Woman talks a blue streak.