I appear to have 14 machines all hooked up to one 28"~ CRT.

360, Wii, N64, Xbox, Saturn, Dreamcast, and JP and US PS2s sharing the same cord, all on the S-Video box.

In the AV switchbox, you've got the Genesis/32x/Sega CD, which I'm counting as one combined machine, an NES, a 3DO, and a Master System. If I ever bother finding my generic S-vid cord I'll probably move the 3DO over to that switcher, where a single space is still available.

Finally with the RF switcher, there's a Colecovision and the Atari 7800, with a 5200 switchbox hooked in. I just don't have the space for the machine proper.

Finally there's a Vectrex opposite that TV, which is not in that initial count but is nevertheless hooked up and ready to go. I figure when the time comes that I have more space and income, I can get a new tv, shift some of the newer consoles to that, and shuffle a couple more older consoles onto this one that currently have to have a "revolving door" for being hooked up, like the Turbo Duo, the Neo Geo, and the rest of the pre-crash console collection.