If you're like me, you enjoy a change of scenery every once in awhile on your mobile. And on Windows Phone 7, that is limited at this point to altering the lock-screen photo. While using your pics is certainly a fun twist, having access to a resource bin of images is even better.

Wallpapers HD is a nice freeware app in the Marketplace that just does that. While the interface is a little odd at time (no swiping), the daily updates and wide ranging categories make it quite useful and fun to have your on your device. In addition, the ability to download pre-cropped images or the full version for your own editing makes it a winner.  Check out the video hands on to get an idea of what to expect!