The Matias One keyboard has a clever idea-- it controls both computers and devices with Bluetooth connections (including iDevices), swapping between devices with the press of a button.
Connecting to PCs via USB, it carries x2 additional USB ports and a row of standard function keys acting as media player controls on Macs.
Four versions are available-- Standard, Slim, a Blackberry-compatible model (even if most Blackberry devices already have excellent physical keyboards) and most interestingly, Tactile (with Alps mechanical switches, sculpted keytops, x3 USB ports and anti-ghosting circuitry).
Each keyboard also includes a handy stand, lifting and tilting mobile devices for easier viewing.