I've got a Loft Box - b100dy brilliant they are!
You feed your aerial connection in, sky connection in, FM connection in, DAB connection in and, if you have it, CCTV connection in.
Obviously not everyone has all of the above but it can take one or all or any combination in between.
Primary feed goes out to living room through ONE co-ax cable where it is terminated in a triplexing wall plate which splits all the signals. You then feed your sky box, freeview box (or whatever else needs an RF frequency) etc. A cable then return back to the wall plate and a cable returns to the loft box (this returning cable carries pictures shown on your sky box, freeview box, dvd etc).
You now have all signals and pictures in your loft box which has 4 or eight outputs to feed other rooms, using triplexing wall plates.
You can now watch normal TV in any of the supplied rooms or you can use the RF signal to supply an additional freeview box for digital TV. You can also watch sky in each room (restricted to whatever is being watched in the primary room). The Global Loft Box is compatible with the Sky Magic Eye too allowing you to control Sky in whatever room is supplied with signals.
Sounds complicated and expensive but it really isn't.