In the last year (beware i'm very picky so don't take this as offensive):
Metro Last light
Need for Speed (most wanted I think, free off PS+)
I usually research a game beforehand quite rigorously to see if i'll like it. But sometimes I do buy games at a good deal (Mass effect 2 ultimate edition new, £15) or when nothing else is out and reviews well (sleeping dogs) and the pleasant surprise of these great games is priceless.
PS, PS2, Gameboy Advance, PS3, PSP, PS4, Xbox One