I just found out that the speculation that intelligent life predated humans is called "The Silurian Hypothesis" and is, indeed, named after "Doctor Who and the Silurians."
The Stone Tape Theory comes from the Nigel Kneale play.
Hacker: You said you'd heard this rumour, I said is it true, you said yes! Bernard: I said yes, it was true that it was a rumour. Hacker: You said you heard it was true! Bernard: No, I said it was true that I heard it!
