This year's awards were terrible, we can all agree on that. Instead of actually picking the best films of the year, the Academy went for as many controversial films as it could find or movies that had some deep "message" to them--like people have said, Brokeback was a slow love story that would have been ordinarily ignored if it weren't for the fact that it was a movie made about gays. Serenity had a great story, dialogue, and even had it's own little "moral" to it. Of course, since it was science fiction, the Academy instantly condemned it as "not worthy of the Academy Awards." The only time I can think of a sci-fi movie winning anything bigger than a technical award is win Sigourney Weaver won Best Actress for her part in Aliens.
There was also the suspicious absence of Jarhead, which was quite a good film IMO. Certainly a little better than Good Night and Good Luck or Syriana.