Dallas Buyers Club - I personally think it is better than 12 Years a Slave, but doubt many will share that view. I have a special place it my heart for movies that have a tough 1-2 punch of Lead and Supporting Actors/Actresses. Great examples would be Fight Club, Rounders, There Will Be Blood and of course Breaking Bad. The only reason I watched it today was because McConaughey and Leto both (rightfully) won Golden Globes last night for their roles in it. There were some really heavy scenes that they both handled near perfectly, and they both had to have upbeat, lighthearted scenes as well.
The mid-80's Texas setting was done better than even the American Hustle setting, I thought. Way more low key and natural than AH was. And the way they director handled McConaughey spells of weakness was very well done. It sucks that this came out at the same time as so many other movies that were marketed better, but this may be the most underrated movie of the season.