If you're emotionally bonded to the idea of needing a real tactile keyboard for your iPhone 4 then the TK-421 case might be your fantasy dream date.
The nerd squad at Think Geek have come up with an iPhone case that conceals a flip-out tactile keyboard that connects via Bluetooth. Rather than using the iPhone's dock connector, the keyboard is powered by a built-in rechargeable battery that recharges using a USB cable.
A big downside here will be the awkwardness of snapping photos while your keyboard is fully extended and trying to keep the keyboard battery charged.
Those pesky annoyances may be a buzzkiller for some but not necessarily a deal breaker for the tactile keyboard geeks.
Expect to pay $49.99 for the kind of bulky, obsolete, snap-on QWERTY keyboard Apple never intended for iPhone. The TK-421 will start shipping around November 18th and quantities are limited.
*Works with any apps including e-mail, web browsing, notes, and calendar.