I had to post and run so I'll go into more detail this time.
FTA satellite uses the same equipment Dish does. You get a dish, LNB (antenna), DiSEqC (digital satellite equipment controller) switch, and converter box. You'll also need a tool for measuring azimuth and a signal strength meter to help point the dish. Finally, you'll want a list of satellites you'll be able to tune. Google that.
Dishes vary in size. Larger dishes support more LNBs, oval dishes allow you to tune multiple satellites. Each LNB supports one satellite and a maximum of two TV outputs. Typically, the largest dishes support up to four antennas. You'll often see hardcore FTA junkies with multiple dishes to tune multiple satellites.
The boxes are basically like DTV converters. They take the digital signal and turn it into something you can use. They come in both SD and HD flavours and start around $100 or so. I can't remember the exact cost. Most of them have a USB port on the back to connect an external hard drive for recording. Some do have DVRs built in though, but those units are expensive.
So you might be wondering what kind of TV you'll be able to watch. Well, network TV pretty much. ABC, PBS, NBC, CBS, and FOX all send their signals unencrypted so you can tune into Dish's or DirectTV's satellites to get them free, and in HD. It's perfectly legal since the same rules with antennas apply. You can also get international network broadcasts. Stuff like CTV out of Canada, or TV Polonia out of Poland. FTA is somewhat popular with ex-pats for that reason. What you won't get is cable networks and specialty channels. So if you like Comedy Central or HBO, you can forget about it.
After some experience with this system, I think it's overly complicated for what it's worth. It's a fickle technology. That's why so many flocked to pay satellite. A lot of the boxes aren't vary user friendly and you have to come in with some knowledge of what you're doing.
If you want to cut the cable, the best thing to do is set up a DTV antenna. Setup is simple, strait forward, and most TVs already are ATSC capable in the US. Just put it on your roof, plug it into the TV, and you're off. Works with TIVO and your PC for recording, and the content is largely the same as FTA satellite. Just no international channels. Plus, it requires minimal equipment and knowledge to set up.