I do most my re-watches this way, or on Netflix, because I like to start at the beginning & work my way through the show.

I do watch it every so often when it's on tv, though.

In all honesty, it's the only one of these I have access to. XD

But I like not choosing which episode to watch. I do own a box set of a different TV show and tend to have a habit of watching the same few episodes over and over!

I have all the dvds, a local channel broadcasts it every weekend and still watch it on Netflix :p