What prompted Ennis's father to show him the dead gay man? Did he suspect that his son wasn't straight and was trying to scare him? Or was there no prompting and he just wanted to instill his prejudices into his son at an impressionable age?
Award Snub: Movie critics generally see the decision to award Crash with Best Picture over Brokeback as one of the biggest Oscar mistakes of the decade, if not all time. It's become an even greater consensus in the years since, as Crash has not aged well compared to that year's other Best Picture contenders. The voters are commonly accused of wimping out by awarding a movie with the relatively safe message of "racism is bad."
Awesome Music: The music from the trailer ("The Wings") is very touching, and it became a staple of slashyFan Vids. But it's very cool on its own merits.
The second night in the tent; Not only is it the first tender, romantic scene in the film, it also seems to be the first time that Ennis ever experienced any kind of physical love and/or affection from anybody. Plus the fact that Jack is gentle and patient with him in spite of his nervousness of being with another man.
While it is unknown whether or not Jack's mother knew her son was gay, unlike her husband, she is kind and hospitable towards Ennis when he arrives (offering him coffee and cherry cake), allows him to keep the shirts from Jack's closet (which Jack kept all those years since their first time on the mountain), and even invites him to return if he wishes to.
The fact that Ennis decides to call off work for his daughter's wedding, and gives his daughter and her fiancee his blessing; "To Alma and Kurt!"
Part of the reason for all the jokes about the premise (and the subsequent misinformation about the men's jobs) was a South Park gag from years before Brokeback Mountain was made about all independent movies being about "gay cowboys eating pudding"; there may not be any pudding, but otherwise... In fact, Trey Parker and Matt Stone commented in an interview:
Stone: If they have pudding in that movie, I’m going to lose my mind.
Parker: No, if there’s pudding eating in there, we’re going to sue.
Internet Backdraft: At the time, whether this movie should have won over Crash was quite the debate-starter (to say nothing of those who think neither deserved to win). Now, while it's still not consensus that Brokeback was the best film that year, most film critics agree that Crash should not have beaten it.
Some were rather upset about the movie centering on a gay couple.
The speech leading up to "I wish I knew how to quit you". Despite going memetic, the line in context was very emotional.
They Wasted a Perfectly Good Character: Lureen Newman, who did nothing of importance in the final third of the movie. She didn't even react to the confrontation between Jack and her father! This is even more notable in the story in which she only appeared in one scene (to tell Ennis about Jack's death).