Well, yes there was a 50″ rear projection TV in my server room.
It was the foyer TV and the bulk off it stuck in to the server room.

Two problems with this.
A) heat. The unit vented into the server room.
B) size. That space has now become valuable needed space.

The server room is approximately 2.4m wide and 5m long. The raised floor and positioning of the doorway makes it just possible to squeeze in a 4th rack for new equipment.
With 1m deep racks and needing 800mm clearance at the front, that leaves only 600mm which was the space the TV was taking.