Joe Rogan

Self - Host

Alex Grey

Self - Artist

Roland Griffiths

Self - Behavioral Pharmocologist

Terence McKenna

Self - Writer & Cultural Commentator (archive footage)

Graham Hancock

Self - Writer

Dennis J. McKenna

Self - Ethnopharmacologist

Ralph Metzner

Self - Psychologist

Jeremy Narby

Self - Anthropologist

David Nichols

Self - Medicinal Chemist

Douglas Rushkoff

Self - Writer

Andrew Stone

Self - DMT Volunteer, Software Developer

Rick Strassman

Self - Psychiatrist