Bluetoothiness
I remain in awe of what computers can do. I paired my Bluetooth headset with my Mac and, as a test, I'm listening to Mike Cross's "The Wrong Side of Midnight" out of iTunes in one ear through a speaker that has all the dynamic range of a toy piano. It's like a dog that can walk on his hind legs. It's not that it's done well; it's that it's done at all.

In reality, I think there's a good reason to pair a headset with the computer. This should allow me to make Skype calls without physically tethering myself to the computer.