Some truly excellent games from Rockstar are on sale right now on PlayStation Network.
You can't go wrong with the Red Dead Redemption and Undead Nightmare Collection ($9.99) or Max Payne 3 ($4.99). Bully ($2.49), a PS2 Classic, really is a classic. And then there's the line of Midnight Club games for people who are into that series. I know you're here.
Also, The Warriors -- I'd be all over that if it weren't the PSP version being discounted.