Computrainer For Running

I was reading a review about a CompuTrainer, which for those of you who are not in the know, it is a high tech stationary training bicycle, that can or can not be rigged to the computer.
The reasons you would want to rig it to the computer are the benefits of the software, which would allow you certain data on your training, but that is not the main thing or what got my interest up. Apparently, there is a lot of different software available, that will allow you, like a computer game to race against an opponent with the same kind of visuals as a computer game. You can be in training mode, or competition mode and chose the tracks and trails you want to ride, either imaginary or real life courses.
Its sound like such a great toy to have around, and I was wondering if there was a treadmill or elliptical with the same sort of features.
If anyone knows, I would love to be pointed in the right direction.

photo credit - via creative commons playingbarefoot