And the number one reason why I want a basement

I would like to turn it into a Star Trek-themed home theater setup.

Apparently, sci-fi man caves are the rage. I need to research this trend some more.

http://www.reighn.com/

Nice flash panorama here:
http://www.reighn.com/theaterphoto.html

The other parts of the basement will be an Apple Store and Best Buy, of course.