I had plans involving OpenCL.
Then Max Payne 3 happened.
Such a well executed game; the story was really good, the characters were realistic and engaging and there is nothing more satifying than doing a bullet time drive into a room and popping 3 guys in the head with 3 shots ;) The sound track rocks; it fits so well with the setting its crazy and the graphics on the PC version were pretty awesome.
The whole story mode is like playing a film in a way, the combination of game play, voice over, cut scenes and subtle interactive hints (such as Max saying "I knew I couldn't stay here long..." when the game thinks you should move forward) was really well done.
A few minor issues such as cut scenes jumping slightly from game play or the tendency for Max to sometimes forget the gun he was holding... that said it doesn't happen all the time so when he is done with a cut scene he'll pick up the submachine gun he put down on a shelf before walking off...
So far, game of the year for me, no contest.