Anybody want to explain Usenet to me like I'm seven?

I've decided that I'd like to watch Doctor Who in hi-def, commercial free and without all the crap BBC America plasters on the screen. I already know how to download using torrents. I got a "We caught you!" email from Comcast last year when I used utorrent even though I used PeerBlock and want to avoid getting another one. I've heard that Usenet is the way to go. How do I get started? What client should I use? Is there a host I need an account on?

(Note: if the FBI is monitoring this...

Anybody want to explain Usenet to me like I'm seven?

Anybody want to explain Usenet to me like I'm seven?