Still wish the iPhone had physical letter keys like Blackberries or WinMo phones? First there was that butt-ugly iTwinge keyboard holster, now there's 4iThumbs: a clear plastic overlay with nubs located over the on screen keyboard.
On the upside, the covers only cost $15 (portrait), $17 (landscape), or $20 for both. Problem is, you're supposed to slap them on and off when you want to continue using the iPhone's touchscreen. That's not only a pain in the ass,
but I'm sure the adhesive won't last too long, either.
Update: The 4iThumbs team got in touch to clarify that the overlay doesn't actually adhere to iPhone screen—it slips and clicks into 2 black strips that remain on the top and bottom portions of the face. You can't see it in the shots because they integrate into the design of the phone and allow the screen to be inserted and removed as much as you want.