sentences:  SF originally used the same branding and packaging as the United States Sci Fi channel of the same name but had its own schedule and programming.It aired popular shows such as "Doctor Who", "The X-Files", "Buffy", "Charmed", the original and reimagined "Battlestar Galactica" series, "Medium", and the "Star Trek" and "Stargate" franchises.Sci Fi switched broadcasting from to aspect ratio on 1 December 2008.