Xbox 360 Blade background customiization!

Major Nelson explains how users can change the background image on the 360 blade to a hi-def image from the water balloon fight that the Xbox team hosted in Australia.  I never knew that I could change the background image, that's rather cool!  

Doctored instructions from MN's blog are below:

Once you sign in, go to the Media Blade, then to Pictures. Go to Portable Device (such as a USB memory stick) scroll to find the photo (you'll see a thumbnail) and when you have the photo highlighted, press X.

Very good to know!  I'm surprised I didn't notice this when I read the 360 manual.  Perhaps I read the wrong one :)