Screen that is mounted in the ceiling?

[mason]

I will be changing my screen shortly and I was considering getting an electric one mounted/sunk into the ceiling i.e. so that when the screen is up you cant see it.

Has anyone had this done before? If so a few questions:

1. How much did it cost and where did you arrange this
2. How good does it look (any pics)

or

3. If you have done it yourself o you have any tips and how easy was it

Many thanks