If you're a heavy Xbox user this offer is for you. BestBuy is adding a 4,000 Microsoft Points card in your shopping cart for free when you purchase a Windows Phone 7 handset. This deal is only avaiulable in-store so you'll need to swing on by to your local BestBuy to earn this mammoth amount of points. 

Unfortunately -- as of yet -- Microsoft points can't be used in the WP7 Marketplace, which would make this offer all the more worth while, but getting those must-have addons for your Xbox 360 games, renting/downloading movies, completing your music collection and suiting up your avatar to show off on your WP7 device can't be all bad, right?

Currently BestBuy are selling six handsets; Samsung Focus, HTC Surround, HTC HD7, LG Quantum, HTC Trophy and the HTC Arrive. Going for this deal certainly wont leave you feeling "cheaped" into getting a below-par device since there's a great selection available.

Source: BestBuy, via: WMPU