Turn your iPhone into a giant ear with the Ear Case for the iPhone 4. Not only does this silicone rubber case make you look like ridiculous (or ridiculously awesome if you will) it also protects your iPhone from scratches and bumps.
See the other side looks just like a regular iPhone case. Very original and useful. It appears to only be available in “pale white person”, although a little touch-up paint can fix that, or some reverse spray tan.