Your Xbox 360 Marketplace deals of the week are all 2K Games-related, with 50% off a bunch of add-on content for its most popular games. Oh, and some Avatar stuff, too.
I'd recommend the Borderlands content if you haven't checked it out yet, especially at that price. "Minerva's Den" for BioShock 2 is also surprisingly excellent, mostly because of how well-written I thought it was. Any other purchase suggestions for fellow Dtoiders?