Most successful sci-fi TV show

Most successful sci-fi TV show
Who
Unknown
Where
Not Applicable
When
2010
Based on longevity, DVD sales, views on BBC’s iPlayer and publishing spin-offs, Doctor Who is the most successful science-fiction programme on TV. This eclipses the original Star Trek series, which has had numerous spin-offs (such as The Next Generation and Voyager) that are not a genuine continuation of the same show.