OK, maybe not a lot of resale value, but value for sure.
To help sell the value of the theater to those who may not be familiar with its benefits and how enjoyable a family / entertainment activity a home theater could be, I programmed a special "demo" button on my AMX control system with a laminated note taped to the door, inviting people to come in, press the one button labeled "demo" and sit back to enjoy the 4 minute 37 second demo of the system.
The feedback I received from all but 7 people (out of 62) that viewed my home before it sold was extremely positive and specifically mentioned the theater. Let's face it, most people have a TV area in the basement, this is just an extreme TV area! One other point of note - I specifically mentioned that the equipment and seating was not part of the sale but could be negotiable. As it turned out, the couple I sold the home to purchased all of the equipment at my fair market value asking price and just viewed it as getting "free" installation, setup and programming. And when we were leaving the house, my wife and I left them a nice gift basket of some wine, 3 DVDs, some microwave popcorn and a few movie-theater sized boxes of candy. We received a thank you card the next week saying that they ended up staying up until 3AM their first night in the house watching all three DVDs because they enjoyed it so much and this was from a couple who had never seen a front projection setup in a residential setting. I've even gotten a few calls from the guy in recent years asking about different upgrade paths for certain equipment, so it has been a nice connection. Ironically, I still haven't made it a point to go back and see it even though he has offered...although being 600 miles away from this house hasn't helped!