I did this a couple-three years ago and got a lot of responses. Let's do it again!
The rules are easy-peasy: put the image of your current wallpaper on your blog and put a link to it in the comments below.
I'll show you mine if you'll show me yours ;^)
My current wallpaper:
Don't remember where I found this photo. It is a composite of different photographs taken during a solar eclipse that occurred last summer; iirc, the total eclipse was visible only across a swath of the Pacific Ocean (but my memory is very vague on this last point).
Other recently used wallpapers, many of which you may have already seen here:
(photo taken and decorated by Heather of lectio.ca)
Maybe I'll make this into a contest...