Sold in five colors, Speck's new SeeThru for iPhone 3G ($30) is a clear hard plastic case that separates into two pieces when you want to use the iPhone 3G for widescreen video or audio purposes. Form-fit to the device's curves, this version of SeeThru adds rubber grips to the left and right sides, and provides openings for everything from the camera to the side and top controls. The plastic is notably pretty easy to scuff -- some of our review samples…
