Great deal on XBLM points

If you pre-order Halo 3 at Best Buy for $5, you can get a 1600 point marketplace card for $4.99. They don't publish this in-store, but you can print out the page off their web-site and they'll match it at the service counter.

If you already have H3 pre-ordered or don't want H3, you can just think of it as spending $10 and getting a green game case and a 1600 point card for $10 (which is still half price). I'm thinking of doing the deal again, just to snag some more points "on the cheap".