Microsoft Hardware will later this year release a new keyboard - Ultimate Keyboard. The keyboard is a wireless (bluetooth) and ergonomical keyboard with backlight functionality that senses the light in the room and when you use the keyboard.
The keyboard are designed for Windows Vista and the Microsoft Live services (Messenger etc).
I really like the design and that it is an ergonomical layout of the keys. I use that kind of keyboard at work but at home or when sitting at my laptop my fingers more thatn often slip.