Well, our "living-room HT" essentially has one entire sidewall as untreated glass windows facing the backyard. Of course, we cannot use our front projector before dark, so we kept our old 32" tube TV in the built-in shelf for daytime viewing (which we use very rarely anyway). For nighttime viewing, a pulldown screen comes down in front of the built-in, and voila, the living room is transformed into a cinema theater!