This is such a special episode...Toby Hadoke is well-known as a foremost Dr Who scholar, but he is also probably the world's expert on Quatermass, a massively influential series of TV shows (and later Hammer films) that laid the foundations for all science fiction TV and movies, yet is unfortunately largely unknown in the US.
In addition to an insanely in-depth discussion with Toby on all things Quatermass, Guy and Ron do a thorough walk-thru of Quatermass and the Pit, so you can experience what it's all about if you don't want to go to the effort of digging up ancient BBC series not sold or streamed in the US.
Is it worth watching for a modern audience? Are you kidding us -- a thousand times yes, already!