Hey all,
We were setting up for a video shoot today when I looked up at one of our lights and something that I have seen a hundred time struck me funny. We use heavy black aluminum foil to restrict light from hitting places we don't want it to hit. It is called Cinefoil. I thought that this might be great masking material for behind and around monitors (assuming you are cafeful about AC).
This is like REALLY heavy aluminum foil. I grabbed a piece and started to play with it. I think it has many potential uses for our type uses.
http://www.theatricalshop.com/rosesweb/cinefoil_by_rosco.htm