Um, it's only the second day.
But I'll play along: yesterday I watched Superman The Movie (1978), kicking off a week long DVD marathon of the Superman films. Later this evening will be the original version of Superman II.
As for films actually released in 2012, We'll just have to wait and see.
You add to the list as you see movies throughout the year, or however you want to do it. I like this thread in that It does help me maintain a list so I know what movies I saw in a specific year. I have a hard time remembering such things so this really helps.