Pass the time until the release of Halo 3 by picking up a copy of BioShock ($60), a first-person shooter that mixes RPG elements, an incredibly immersive environment, and an intricate, involving plot to create a gaming experience that is leading reviewers to call it "an unparalleled achievement," "an essential gaming experience," and a "one-of-a-kind masterpiece." Lots and lots of perfect scores on this one, folks.