I've just got my new Macbook Pro (they're sweet machines by the way, I'm so glad I didn't get the Air), and it came with Mac OS X Leopard. I quite like the picture of the Earth horizon, but the Earth is on the right hand side. Because the earth is bright, and the icons are bright, when they are both on the left hand side sometimes they are hard to see. I wanted to flip the picture, but I had trouble finding it. So, for anyone looking for the location of those pictures i the Finder, they are in /Library/Desktop Pictures.

Also, I've posted the flipped version of the picture here (I just opened it in Preview, horizontally flipped it, ad saved it without the EXIF rotation information).