Available in black, blue, pink, or white, PDO's TopSkin for iPod touch ($20) is a relatively straightforward silicone case. It includes a clear film screen protector that fills a screen-sized hole in its rubber body, and uses a thin layer of rubber to protect the iPod's controls. Like the iPhone version of the case, TopSkin for iPod touch covers the device's Sleep/Wake switch permanently, and has bottom flap-style openings for the Dock Connector…
