Essential:
Last of Us
High Priority:
Metal Gear Solid: Ground Zero
Final Fantasy XIII Versus (if it actually gets released)
Will probably buy at some point:
God of War: Ascension (played some at Eurogamer and was a lot of fun)
Last Guardian (I'm actually doubting a 2013 release)
GTA V... unless it gets released on PC at the same time which is doubtful
Most of the multiplats I'll play on PC.