Winscape

The Winscape application splits the source footage (stills, video, whatever Quicktime will show) onto the connected displays according to the dimensions that you configure it with.

It can interface with a Wii remote over bluetooth for tracking purposes. It also provides a web service interface for remote control of scene selection and a sleep command.
The associated Winscape Remote iPhone application can perform these functions and also wake the Winscape computer via a Wake-On-Lan ethernet packet.