This is an interview that seems to be in Mike Gathers' wheelhouse and I thought it was worth a listen. As I mentioned recently, Hilaritas has just published Sebastián Marincolo's book, Elevated: Cannabis As a Tool for Mind Enhancement.
Some of the topics of conversation: What desirable states can be enhanced with cannabis and cannabis as an underrated tool for therapy (underrated in comparison with mushrooms and LSD). (As Michael Johnson remarks here, cannabis seems to be promising as a way to help people with autism.) Michael wrote a foreword for the book, another reason to buy it.
I was struck by Marincolo's comment that he had to give up his career in academia to pursue serious cannabis research. The website for the podcast has useful links.