In my Magnus Archives relisten last night... I particularly enjoyed the episode where an astronaut was placed in a (consensual) isolation experiment, only to be driven mad when deep into his stay he stopped seeing the Earth or Sun. As for as he could tell we've all blipped out of existence, & he was alone in the universe!
Also we've heard of older libraries documenting supernatural eyewitness testimonies, some followups from previous episodes, Oregon Trail cannibalism, & taxidermy encounters.