The Xbox Live Deal of the Week that kicks off today features tons of Dance Central 2 downloadable content. Sure, it's an identical repeat of last October's sale, but Microsoft and Harmonix are surely banking on many new players thanks to Black Friday sales and Christmas gifts. Do you need this DLC? DC2 has plenty of songs on-disc to keep Kinect gamers busy - 45, to be precise. Still, part of the fun of music games in general is being able to play to your favorite songs (or at least more of them), so it wouldn't hurt to pick up a song pack or two.