I would actually reccommend getting 2 Coax, 2 cat 5 to each room, and 4 coax 2 cat 5 to the family room / living room. I would also reccommend putting all of the wire junctions in a structured wire panel, and have it in a closet.
Here is my photo of my install (located in my hall closet)
http://www.kostyun.com/frank/photos/misc/wire2.jpg
http://www.kostyun.com/frank/photos/misc/wire3.jpg
The wires on the left are all my cat5 locations, the 2nd to the left are all incomming lines (4 from the satellite dish, 1 from the telco, 1 from the cable co, and 2 antenna lines) 2nd from the right is cat3 for all of the phone jacks in the house, and the far right is all of the coax connections. My cable modem is located below the wireless router.
2nd photo is an example of my "larger" wire jacks