Here is the list of the 5 great NFB films mentioned in the podcast:
https://www.nfb.ca/film/very_nice_very_nice/
https://www.nfb.ca/film/big_snit/
https://www.nfb.ca/film/volcano/
https://www.nfb.ca/film/chairmen/
https://www.nfb.ca/film/begone_dull_care/