in order to futureproof my living room, i've run:-
12 x cat6 cable for ip phones and pc's, game controllers, ir -relay and such like...
9 x speakerwire, for surround / home cinema,
4 x usb 2.0,
3 x hdmi for flat screens, (one for each usable wall)
1 xscart,
1 x vga
8 x 2.5 mm twin...