Dear Tom,
Do you have any thoughts as to why Doctor Who--in all its myriad forms--clearly resonates in the psyche of so many people?
This came to mind because I am preparing to teach a new course by re-reading some works by mythologist Joseph Campbell. His idea is that all successful stories (including, presumably, Doctor Who) resonate because they touch common themes within the human psyche. In his view, all great tales must be variations of The Hero's Journey (exploration/encounter with the fantastic or unknown/triumph and redemption), which he calls the Monomyth. He even claims the story of Christ follows this pattern.
Thanks and all best wishes,
The Weary Professor