assassin's creed was a lot of fun, and it's old enough that it should be cheap now. it's relatively repetative, but it's still really enjoyable. burnout paradise (at least for the 360) has an enormous amount of upgrade-based extras that came free with it - and it's super cheap as well. dead space is an excellent survival-horror game (not my favorite genre), and mirror's edge is really intense and enjoyable (if a bit short...wait till it comes down in price a tad). dmc4 is great if you liked the other dmc games, eternal sonata is awesome for what it is (a really quirky rpg), and far cry 2 is excellent if you like sandbox-based fps games.