I use whatever Cat5e for date, Cat3 for phone
(I have a bunch salvaged from an office), and RG6 I can get a deal on. If I am going to use it for satellite, I be sure to get 2000+ Mhz stuff.

Generally, it would be a good idea to prewire 2 RG6 and 2 cat 5, or 1 cat5 and 1 cat 3. Double the RG6 and data Cat5 for where a home theater would be installed, as well as the possibility of a satellite dish.