20 PC's!?!? You can only use 1 at a time!
Yeah I know it got a bit silly, to be fair about 5 of them were an ESX /vsphere set up lab I was using when doing a VCP course /revision. A few of them are laptops and most rooms in my house have a pc/mac connected to a tv to stream stuff from the media pc downstairs. Then there's my Main Gaming Pc and my wife's PC in the computer room. Plus a bunch of old unused PCs that I put in the loft. They all add up pretty quickly and to be fair after I counted them all up I was pretty surprised :O