The device itself plugs into the TV's HDMI slot and looks like an oversize memory stick. I then put in my home wifi details just like you would on a phone. Then with apps like kies you can link to any other android phone or vice versa. The family windows box isn't turned on most days and when it is it just continuously downloads updates and spins the hard disk.
Oh, just an ICS dongle. Thought you were talking about a full, integrated Android TV O_O
They're in a chain of stores in New Zealand called Warehouse Stationary.
There is a bunch of such devices on dx.com, but I wouldn't be wondered if they start appearing in large department stores all over the world by now, similar to all those cheap Android based tablets you can buy everywhere now. This is essentially the same thing, only minus the display and plus the HDMI.