Very impressive. I have many old pieces of tech, but most of it is in storage at the moment.
Currently I have, in no particular order: Nes, SNES, Sega Genesis, Dreamcast, N64, 2 Gamecubes, original Xbox, Wii, Wii U, DSi XL, 2 3DS, Gameboy SP, Gameboy color, Gameboy Micro, PSP, Ps3, Ps2, and PS1. I could be forgetting some.
I really like your setup a lot. I plan to have something like that set up eventually.