1) Stranglehold - Rent it, good killing fun for a week, nothing more.
2)Assassins Creed - Great graphics, interesting story, but gameplay might bore you quickly. I thought it was worth a buy, but some say otherwise.
3)Oblivion - Great game, you will lose tons of hours in this game and not even know what you accomplished
4)NBA Live 08 - Terrible, must avoid. If you really want a basketball game get 2k8
5)Orange Box - Very good package, 5 great games for the price of 1. Minor problems with PS3, but it won't take much away from the experience.