If you're planning on upgrading your phone at any point this year, you can get a $50 gift card from Best Buy if you do it at their store.
I've never been Best Buy's biggest fan, but a free $50 is hard to turn down if you're already planning on upgrading your phone. Register between now and February 9th, and upgrade at any point this year at Best Buy or on BestBuy.com to receive your gift card. If you decide you don't want to upgrade, that's fine too—you don't commit to anything by registering.
Since Best Buy has a pretty solid phone selection (heck, they even have the Nexus 4), it's not a bad deal. You can even apply that $50 to the cost of your phone right then and there. Just don't use that gift card to buy an expensive HDMI cable, okay?