Guitar Hero Keeps On Rockin'
Although we think this should be a $40 add-on instead of a $60 standalone game, Guitar Hero Smash Hits converts all the best GH songs to master tracks, and makes a fine "greatest hits" addition to the series.
Kicking Some A(liens)
Monsters vs. Aliens follows the events in the hit animation movie, and does it better than most movie to game tie-in titles. Plus, the characters are pretty darn cool.