This is cool :: Pixelgirl Presents iPhone Wallpaper
I don't have an iPhone... I might get one when my contract expires... but, for now, I'm content with my K800i. One thing that does excite me about the iPhone is the size of the screen.
I love wallpapers and love to footer with things... customising them... making them mine. Pixelgirl Presents is now doing fab iPhone wallpapers.
If you have an iPhone... and love to footer... I would recommend you check it out. If, like me, you are sans-iPhone then check out their stuff too - I think its the best collection of wallpaper and icons available for your computer... and its free.