Apple's newest iMac G5 with built-in iSight and remote control comes with a new media centre application called Front Row. This application has not been released for any other Mac. However, Apple has recently released a free Front Row 1.0.1 update which can be installed on any Mac using Pacifist and Front Row Enabler.
Above is a picture of Front Row running on an older G5 iMac. While Front Row can be controlled with the keyboard, it's not all that useful without the remote control. However, it at least gives us an idea what Front Row is like without the need to find a new iSight iMac to test.