On June 30, Sony is releasing a Wireless Keyboard for the PS3. The keyboard has a PS Button, which can be used to power on and power off the PS3, just like the Dual Shock 3.
Like old Think Pads, the keyboard has a nub in the middle that can be used to control the pointer for web browsing. It's outfitted with Bluetooth, so it can be paired with other devices.
The Wireless Keyboard is priced at ¥5000 ($58).