Darren, Bill,Vaughn,
The things that you three made run through my mind---egad, the possibilities. How about a TV sit (that's a pun) com.? How about one of those dumb, last one surviving, type shows? I mean, you could paint a target on the ground floor and have a turkey for the prize for the best shot (like a shotgun turkey-shoot. In fifteen-floors you would definitely have to compensate for the coreolis (Heck, I can't spell it. You know the gyration effect the earth has on things---like making the water swirl as it drains down the sink---like making you compensate laterally when making a long shot, because of the spin of the earth, etc.) effect and probably some wind currents from warm air coming up from below. I think I better stop now.
Enjoy,
JimB