The SciFi Channel is running a marathon of episodes this Friday with a two hour season finale at 8:00 Central Time.
I have seasons 1-4 on DVD. This is probably the best show on TV and I am sad to see it go.
The writing is awesome and one of the best things about the show has been the music. One of the best musical moments is the end of Season 3 with Bear McCreary's version of All Along the Watchtower.