It took me a while before I realized that the TK-421 case for the iPhone from ThinkGeek actually had meaning other than to some arcane person within the bowels of ThinkGeek just handing out arcane product numbers. It hit me later than TK-421 was the missing Storm Trooper in Star Wars.
If you have an iPhone 3GS or iPhone 4 and you want a keyboard for your device that you can flip out to shut the Blackberry fans out here up, ThinkGeek's TK-421 may be exactly what you are looking for. The case is made in a version to fir the 3GS and one to fit the iPhone 4. Both have a rotating QWERTY keyboard with hard keys that connects to the smartphone via Bluetooth.
The iPhone 3G will fit into the 3GS case, but the fact that the 3G lacks Bluetooth keyboard support means it won't work. The case is black plastic and the clasp that keeps the keyboard tucked away is magnetic. We first saw this case back in September and it is now shipping. You can order one right now for $49.99.