Hey, Mr. Wizard. Sorry to say, I haven't seen Brokeback Mountain, and I'm not certain that I will get the chance, but I don't see the connection to the movie and Back to the Future, and I hardly think that it's success had anything to do with political correctness; more to do with merit, I suspect.
I was quite disappointed in The Aviator, however, as I was expecting full coverage of Howard Hughes' life.
I did see Crash, and thought it to be exceptionally fine, probably one of the best that I have seen in many years. I created a thread about it, incidentally.
Don't know about the one with Halle Berry and Denzel Washington. Halley Berry is okay, I guess, but Washington is excellent as an actor, I think; besides that he's cute.

It was good to see him play a villain in that movie where his own neighborhood finally turned on him. Forgotten the tile of the flic.
Didn't see Million Dollar Baby, either; just didn't want to do so.
Makes no difference to me what the film explores as long as the acting is good and the ideas believable.
One surprise. Watched a Wes Craven movie last evening and expected it to be the same old--same old and was delighted with the film from beginning to end and particularly pleased with the shock ending.
Sorry if I haven't touched on all your points, as I never watch a film from another critic's viewpoint, just mine.