Ahh hell.. Might as well discuss the plan, Ben already guessed it somehow.
Let's start with how I came up with the plan.. So I was sitting at my wife's desk looking at her desktop background. I recently installed Vista on her machine. Mostly due to the fact that ram is rediculously cheap now. I figure 8gigs for under $100, I might just be able to get Vista to move at a decent speed. heh.. Sorry, going off on a tangent already. Where was I? Oh yes.. Desktop background.. She's got the one with the rocks. I was just kind of staring at that noticing how each rock is a different color, but they all have the same pockmarks and cracks and generally all look to be the exact same kind of rock. Must have been some photoshop hackin goin on to get each one such vastly different colors. Anyways. That gave me my idea.. I'm going to build a window into the side of a very tall tower case (like my old project "The Rock" kind of tall) except that the window will be a plexiglass enclosure that kind of sticks about an inch into the case. I'll fill it with decorative rock, and set up some kind of water distribution system at the top that will more or less evenly rain water down onto and through the gravel. It's not going to be an evaporative cooler, though I have considered making the inside wall of it aluminum so it will disipate some heat, and double as a bit of a reflective surface. So the waterfall will be airtight. I have access to a laser engraver, so I'll probably toss a big apple logo on the front window too, since I'm running OS X on this machine (no Vista for me!).
Anyone besides Ben reading this?
Chime in.