Battlestar Galactica Webisodes: The Face of the Enemy is a ten-part web series produced by the SyFy channel as a holder between the breaks of Battlestar Galactica episodes during season 4. Set after the discovery of Earth, the ship Galactica and the fleet are back in space as Lt. Felix Gaeta (Alessandro Juliani), a trusting idealist, is onboard ...
I'm going to stick to must watch shows only rather than list my entire Sci-fi library. If there is something not on this list it may be because I haven't seen it either, like any of the Star Trek series. I've seen bits but not enough to give my vote against or for it.
Also I have a few shows multiple times to show webisodes and things that run concurrently with the show