Making my theatre darker..

[summo]

Gday guys,

I'd like to know if theres a possible way to make my theatre room darker than what it already is whilst a movie is playing.

I have a picture in my head of what i want.. Just a screen with a picture, floating around a black void.

If all equipment is turned off and my door is shut, i can't see a single thing. However, as soon as a movie is playing, the entire room lights up. I can see walls, the ceiling, equipment rack etc.

Sounds pretty silly as of course a lit screen is going to reflect off walls but i was just wondering if there was anything i can do to reduce the light whilst im watching movies.

Thanks guys