I wouldn't run a regular phone wire, Cat6 is so inexpensive I would actually run a different color Cat6 for the Telephone lines.
But in a typical house, I think (2) Rg6 and (2) Cat6 should be sufficent, and possibly 4 RG6 cables on your main television.
If your like me, where you got multiple Tivo's, Directv, DISH Network, Cable and ExpressVU, I see no issue running 6-8 coax cables per television.
But it works very good, mark everything off in the basement or central distribution point, and next time you get a new Toy like Cable or another Satellite service you can be up and running in minutes.
Another thing you might want to consider using is some stuff called interflex conduit, which is basically Orange plastic tubing. Run these as your home runs and place your wires inside, and if you need to change the wiring you can very easily pull new wire.
Its not so much with Coax Cable and Cat5, but I have seen way too many people try to pre-wire for surround sound, wire it with regular speaker cable but not anticipate the type of system they want to install, or better yet cut the ends off too short and then have to splice the cable

Put your wall plates in for all the speakers and then run flexible conduit to the main junction behind your surround sound receiver. If you need to change it, you can easily pull new cable!
As far as Coax, RG6 should be sufficent, but for a few dollars more I would rather see Quad Shield since you can only run new cable once!