Well, I'm playing quite a bit, but I just bought Rhythm Thief and Final Fantasy XIII-2.
Rhythm Thief, as expected, is a lot of fun and, since it was only $2 with a coupon, was DEFINITELY worth it. Heck, I'd recommend it at full price.
Final Fantasy XIII-2 does a great job of improving on the original: The linearity has been toned down a great deal, the datalog isn't mandatory, the story is less ridiculous and has fewer plot holes, the voice actors are amazing (seriously, having Laura Bailey and Jason Marsden as the lead actors is one of the best decisions I've seen in the Final Fantasy series), and a lot of things were streamlined and fixed. They really listened to the fans on this one, and it shows.