Ok, here is mine. The system is 18 screens total, 2 high, shaped like a "C" so the pic sees the back of the 2 on each end, and you can't see the 2nd pair on each end at all in the pic.
All told, there are 17 22" LCD's + the one 17" laptop LCD. There are 2 maxxed memory, overclocked Core2 Quad and Duo towers, each with 3 PCIe dual head DVI cards, and 5 evga USB to DVI adapters for the rest. One tower is dedicated to Tradestation with 10 screensd total, and the other to TOS with 7. The laptop runs a 2nd TOS setup, TD Ameritrade and IB. I have 3 UPS systems and a spare laptop, screens and spare 3 dualhead videocard Core2 quad tower, just in case.
I built the screen mounting system myself, all joined, glued and screwed red oak, and attached to the oak desk and bookcase system, with an ergo swivel chair in the middle.
PS: the pic shows it with 1 22" screen missing (it was over on the other desk with the spare tower), and with the 2nd laptop there on the desk in its place. Obviously I need to swivel the chair a bit to see the last set of screens on either end.