Did this in Illustrator CS, using the new 3D tools. It's a tMac!__
This is an explanation of the dual-action tilt/swivel cam I'm imagining (inspired by a trailer hitch I saw)http://homepage.mac.com/pscates/mockups/pivot.gif
Then, earlier today, I went back to the rear 3D drawing above, scooped this, beveled that, deepened this, etc.
Yes, the "guts" are housed in the vertical "slab" block behind the display (minus the optical drive, which is up front of course, along with a power button, USB, FireWire and maybe a headphone jack).
I did it mainly to illustrate that Think Secret's story of the "components mounted on the rear of the display" doesn't necessarily have to mean they're "glommed on", but rather could be placed perpendicular to the display, making for a nice "T"-shaped base (as viewed from above).