Dropping these here before I turn in for the night. I get all my wallpapers from National Geographic. I didn't take the whole start screen-background thing seriously during the feature announcement, but I must say I really like the floating tile effect.
This is my current desktop. I'm still a fan of the Zune (use my 16GB HD nearly every day) and would actually consider getting the Zune logo laser etched on the back of my Surface RT.