I post this in honor of rjk's Mining Rig Extraordinaire (the Trenton BPX6806 18-slot PCIe backplane)
Full thread here: https://bitcointalk.org/index.php?topic=64450.0 (thread just popped up to be ended and locked)

Final image before he ran into some kind of 11x GPU card limit on the motherboard backplane. Truly legendary!