I've determined exactly what materials I'll be buying and stuff. At the moment, it looks like a mixture of 1x2s, 3s and 4s, plus some nice plywood. I'm not sure if I want to stain it all at once, piece by piece, or perhaps leave the "frame" parts unstained and just do the surfaces so that it get's a bit two-toned like in the renders.
In any case, I'm looking to go out tomorrow to get the supplies.
 
I've got a LOT of cuts to make, and even two at 45-degree angles. Any good recommendations on where I can get wood cut? I get the feeling I asked earlier, but it's getting more official, so I'm looking for rather 'solid' sources at this point.
 
This is sooo exciting!!

thanks, the upper monitor is mounted to the top shelf.  I had a programming job that req'd 2 monitors side by side, and I like that better, but when I orig built this you could fit two 19" mons side x side in the main area, then I bought this 27" and that filled it up.  
Finding a used table/desk is a big plus but you'll still need some skills & tools to fab a good custom desk.  Mine used some maple and birch ply with a kitchen countertop for the main desk area, with a bookcase on one end as a leg.  The top section was so much weight on the desk area that I had to attach a 2" angle iron underneath to support it, lol. They have large pine "desktops" at lumber centers... glued up pine board pieces in the lumber area.