Doctor Who is a TV show.
Doctor Who . Doctor Who has also spawned numerous spin-offs , including comic books , films , novels , audio dramas , and the television series Torchwood ( 2006 -- 2011 ) , The Sarah Jane Adventures ( 2007 -- 2011 ) , K-9 ( 2009 -- 2010 ) , and Class '' ( 2016-present ) , and has been the subject of many parodies and references in popular culture . Gallifrey ( [ ˈɡælᵻfreɪ ] or [ ˈɡælᵻfriː ] ) is a planet in the long-running British science fiction television series Doctor Who . Torchwood . A spin-off from the 2005 revival of long-running science fiction programme Doctor Who , Torchwood aired four series between 2006 and 2011 .