by Shannon Lush
Throughout its 50 years, 'Doctor Who' has mined hundreds,
perhaps thousands, of pre-existing songs, films, books, oral and written
traditions, and established world history for source material. From the 'historical',
stories of the First Doctor's era that would see the TARDIS crew encounter
well-known figures from history such as Emperor Nero and King Richard the
Lionheart, to the Jason and the Argonauts-parallels to the Fourth Doctor story
'Underworld', the adventures of The Doctor have in some way or other been
inspired by outside elements.