Plasticsmith has just announced new accessories for the MacMini. Pretty slick little monitor stands, as well as a nice looking stand that allows you to turn the Mini on its side, taking up even less space.
BTW, check out their slick laptop stand for when you are using it with a keyboard and mouse.
Personally, I like the idea of the grandstand (more free space) but looking at the design of my room, I’d get a tower. It doesn’t necessarily seem like the best idea to flip a computer sideways down but I really don’t care.