Self - Narrator / Narrator (48 episodes, 2003-2012)
Narrator (24 episodes, 2004-2008)
Self - Narrator (12 episodes, 2002-2003)
Self - Bioethicist, Princeton University / Self / Self - Bioethicist (9 episodes, 2010-2012)
Self - Communications Professor, University of Pennsylvania / Self - Anthropologist, University of Pennsylvania / Self - Communications Professor (9 episodes, 2002-2004)
Self - National Geographic Explorer In-Residence / Self - Explorer-in-Residence, National Geographic Society (8 episodes, 2002-2012)
Self - Narrator (6 episodes, 2002-2003)
Self - Anthropologist, Skidmore College (6 episodes, 2003-2005)
Self - Psychiatrist, NYU Langone Medical Center / Self - Psychiatrist (5 episodes, 2011-2012)
Self - Biological Anthropologist / Self - Anthropologist / Self - Anthropologist, Rutgers University (5 episodes, 2011-2012)
Self - Psychologist / Self - Psychologist, University of Pennsylvania (4 episodes, 2002-2005)
Self - Anthropologist, West Chester University (4 episodes, 2002-2004)
Self - Anthropologist, Yale / Self - Anthropologist, Yale University (4 episodes, 2002-2003)
Self - Anthropologist, Boston University / Self - Director of Women's Studies, Boston University (4 episodes, 2002-2003)
Self - Anthropologist, The School of London (4 episodes, 2002-2003)
Voice over (3 episodes, 2002-2003)
Self - Anthropologist, George Washington University (3 episodes, 2002-2003)
Self - Anthropologist, University College London (3 episodes, 2002-2003)
Self - Alcohol & Addiction Studies, Brown University / Self - Professor Emeritus of Community Health, Brown University (3 episodes, 2012)
Self - Psychiatrist, Harvard University (3 episodes, 2012)
Self - Social Psychologist (2 episodes, 2011)
Self - Psychologist / Self - Psychologist, Harvard Medical School (2 episodes, 2011-2012)
Self - Pathologist (2 episodes, 2002-2003)
Self - Anthropologist (2 episodes, 2002-2003)
Self - Anthropologist, University of Chicago (2 episodes, 2002-2003)
Self - Professor of Religion, Swarthmore College (2 episodes, 2002)
Self - Anthropologist, Tufts University (2 episodes, 2002)
Self - Anthropologist, UCLA (2 episodes, 2002)
Self - Theology Professor, Georgetown University (2 episodes, 2003-2004)
Self - Anthropologist / Self - Chinese Studies, Oxford University (2 episodes, 2004-2008)
Self - Lecturer, Hollins University (2 episodes, 2004-2005)
Self - Sociologist, Queens College (2 episodes, 2004)
Self - Anthropologist, Boston University (2 episodes, 2004)
Veterinarian (2 episodes, 2007-2012)
Self - Anthropologist, Univ. of Sydney (2 episodes, 2008)
Self - Maricopa County Attorney / Self - State Attorney (2 episodes, 2012)
Self - Clinical Psychologist, Arizona State University (2 episodes, 2012)
Self (2 episodes, 2012)
Self - Police Officer (2 episodes, 2012)
Self - Clinical Psychologist, UCLA (2 episodes, 2012)
Self - Physician (2 episodes, 2012)
Self - Anthropologist (2 episodes, 2012)
Self - Professor of Criminology (1 episode, 2011)
Self - Psychiatrist, Stanford Univ. Medical Center (1 episode, 2011)
Self - Dean of Socail Work, Boston University (1 episode, 2011)
Self - Clinical Sexologist (1 episode, 2011)
Self - Author, Stuff: Compulsive Hoarding and the Meaning of Things (1 episode, 2011)
Self (1 episode, 2011)
Self - Prison Director (1 episode, 2011)
Self - Counselor, GATS Program Australia (1 episode, 2011)
Self - Prisoner Rights Attorney (1 episode, 2011)
Self - Senior Psychoanalyst (1 episode, 2011)
Self - President, American Assoc. for Sex Addiction Therapy (1 episode, 2011)
Self - Director, Flagler Humane Society (1 episode, 2011)
Self - Exec. Dir. of Southern California Center for Sexual Health (1 episode, 2011)
Self - Director, National Institute on Drug Abuse (1 episode, 2011)
Self - Marriage and Family Therapist (1 episode, 2011)
Self - Lory's Mother (1 episode, 2011)
Self - Psychotherapist (1 episode, 2011)
Self - Veterinary Epidemiologist, Animal Rescue Leage of Boston (1 episode, 2011)
Self - Int'l Professional Surrogates Assoc. (1 episode, 2011)
Self - Psychiatrist, Ajou University, South Korea (1 episode, 2011)
Self - Youth Counselor, Internet Rescue School (1 episode, 2011)
Self - Lory's Sister (1 episode, 2011)
Self - Anthropologist, Univ. of Wisconsin-Milwaukee (1 episode, 2011)
Self - Communications Officer, Flagler County (1 episode, 2011)
Self - Professor of Law (1 episode, 2011)
Self - Owner, Hotlix Candy Store (1 episode, 2002)
Self - Bullfighter (1 episode, 2002)
Self - Photographer (1 episode, 2002)
Self - Cockfighter (1 episode, 2002)
Self - Anastenarian (1 episode, 2002)
Self - Social Psychologist, Oxford University (1 episode, 2002)
Self - Anthropologist, Yale (1 episode, 2002)
Self - Counseling Psychologist, London (1 episode, 2002)
Self - Semioticist, New York University (1 episode, 2002)
Self - Chief on Pentecost Island (1 episode, 2002)
Self - Anthropologist, Argentina (1 episode, 2002)
Self - Historian, UCLA (1 episode, 2002)
Self - Anthropology, Boston University (1 episode, 2002)
Self - Religion Professor, Boston University (1 episode, 2002)
Self - Healer (1 episode, 2002)
Self - Native American Healer (1 episode, 2002)
Self - Voodoo Priest (1 episode, 2002)
Self - Witch (1 episode, 2002)
Self - Cosmetic Surgeon (1 episode, 2002)
Self - Filipino Christian (1 episode, 2002)
Self - Author, Women Who Become Men (1 episode, 2002)
Self - Anthropologist, UCLA (1 episode, 2002)
Self - Anthropologist (1 episode, 2002)
Self - Plastic Surgeon (1 episode, 2003)
Self - Nepalese Villager (1 episode, 2003)
Self - Icelandic Chef (1 episode, 2003)
Self - South African Sangoma (1 episode, 2003)
Self - Entomologist (1 episode, 2003)
Self - Psychiatry Professor, University of Missouri (1 episode, 2003)
Self - Anthropologist, Barnard College (1 episode, 2003)
Self - Anthropologist, Millersville University (1 episode, 2003)
Self - Apache Scholar (1 episode, 2003)
Self - Committee of Blood Reconciliation (1 episode, 2003)
Self - South African Traditional Doctor (1 episode, 2003)
Self - Anthropologist, Princeton University (1 episode, 2003)
Self - Wound Specialist (1 episode, 2003)
Self - Judge (1 episode, 2003)
Self - Ringmaster, Carnival Diablo (1 episode, 2004)
Self - Performer (1 episode, 2004)
Self - Expert of Korean Shaman Rituals (1 episode, 2004)
Self - Lizard Man (1 episode, 2004)
Self - Body Modifier (1 episode, 2004)
Self - Child Psychologist, All India Institute of Medical Sciences (1 episode, 2004)
Self - Sumanahali Leprosy Rehabilitation Centre (1 episode, 2004)
Self - Journalist & Historian (1 episode, 2004)
Self - Japanese Tattoo Artist (1 episode, 2004)
Self (1 episode, 2004)
Self - Anthropologist, Johns Hopkins University (1 episode, 2004)
Self - Erik's Wife (1 episode, 2004)
Self - Anthropologist, University of Missouri, St. Louis (1 episode, 2004)
Self - Former Gymnast (1 episode, 2004)
Self - Author (1 episode, 2004)
Self - Body Modificaiton Artist (1 episode, 2004)
Self - Photographer & Geisha Expert (1 episode, 2004)
Self - Anthropologist, Cornell University (1 episode, 2004)
Self - Sewer Diver (1 episode, 2005)
Self (1 episode, 2007)
Self - Psychotherapist, Caring for Couples (1 episode, 2008)
Self - Psychologist, Univ. of New South (1 episode, 2008)
Self (1 episode, 2008)
Self - CEO, Relationships Australia (1 episode, 2008)
Self - Couples International (1 episode, 2008)
Self - Historian, UC Berkeley (1 episode, 2008)
Self - Matriarch (1 episode, 2008)
Self - Swinger (1 episode, 2008)
Self - Sociologist, Bellarmine Univ. (1 episode, 2008)
Self - Sexuality Studies, San Francisco State University (1 episode, 2008)
Self - General Practicioner (1 episode, 2008)
Self - Psychologist, Assoc. Infant Mental Health (1 episode, 2008)
Self - Dept. of Religion, Boston University (1 episode, 2008)
Self - Fight Promoter (1 episode, 2008)
Self - Psychologist, Univ. of Queensland (1 episode, 2008)
Collector / Self - Hoarder (1 episode, 2011)
Self - Animal Hoarder (1 episode, 2011)
Self - Hoarder (1 episode, 2011)
Self (1 episode, 2012)
Self - Dallas' Grandfather (1 episode, 2012)
Demon Possessed Woman (1 episode, 2012)
Self - Fellow, Harvard Kennedy School of Government (1 episode, 2012)
Self - Bioethicist (1 episode, 2012)
Ben Fodor / Self (1 episode, 2012)
Self - Sherriff (1 episode, 2012)
Self - Houston Victim's Advocate (1 episode, 2012)
Self - Psychologist, Lander University (1 episode, 2012)
Self - Psychology, CSU Channel Islands (1 episode, 2012)
Self - Event Planner (1 episode, 2012)
Self - Urban Anthropology, UNSW (1 episode, 2012)
Self - Skulls Unlimited (1 episode, 2012)
Self - Son Murdered, 2008 (1 episode, 2012)
Self - Psychologist, University of Westminster (1 episode, 2012)
Self - Psychiatrist, Hvidovre Hospital (1 episode, 2012)
Self - Straight Spouse Network, Australia (1 episode, 2012)
Self - Monk, Thamkrabok Monastery (1 episode, 2012)
Narrator (Brazil) (1 episode, 2012)
Self - Anthropologist, University of Notre Dame (1 episode, 2012)
Self - Naked Bride (1 episode, 2012)
Self - Professor of Philosophy, University of Melbourne (1 episode, 2012)
Self - Model (1 episode, 2012)
Self - Prisoner (1 episode, 2012)
Self - Clinical Psychologist (1 episode, 2012)
Self - Nurse (1 episode, 2012)
Self - Tent Boxing Promoter (1 episode, 2012)
Self - Naked Groom (1 episode, 2012)
Self - Celebrity Makeup Artist (1 episode, 2012)
Self - Dress designer (1 episode, 2012)
Self - Economics, University of Texas at Austin (1 episode, 2012)
Self - Body Mover (1 episode, 2012)
Self - Boxer (1 episode, 2012)
Self - Medical Director, Melbourne Sleep Disorders Center (1 episode, 2012)
Self - Sociologist, Trinity University (1 episode, 2012)
Self - Professor of Psychiatry, University of California (1 episode, 2012)
Self - Police Officer (1 episode, 2012)
Self - Psychologist, Western Suffolk Psychological Services (1 episode, 2012)
Self - Human Development, Cornell University (1 episode, 2012)
Self - Fighter (1 episode, 2012)
Self - Retired Boxer & Author (1 episode, 2012)
Self - Prof. of Psychology, UCSC (1 episode, 2012)
Self - Ridglea Baptist Church, Fort Worth (1 episode, 2012)
Self - Pediatric Plastic Surgeon (1 episode, 2012)
Self - Cultural Historian, University of Sydney (1 episode, 2012)
Self - Chief Neurosurgeon, Cedars-Sinai Medical Center (1 episode, 2012)
Self - Chief of Plastic Surgery, Parkland Hospital (1 episode, 2012)
Self - Jill's Best Friend (1 episode, 2012)
Self - Psychiatrist, Harvard Medical School (1 episode, 2012)
Nuka / Self (1 episode, 2012)
Self - Dallas' Grandmother (1 episode, 2012)
Self - Manager of Supportive Housing, DESC (1 episode, 2012)
Self - Dept. of Philosophy, City University of New York (1 episode, 2012)
Self - Director of Higway Safety (1 episode, 2012)
Self - Police (1 episode, 2012)
Self - Writer in Residence, New York University (1 episode, 2012)
Self - Psychologist, University of Washington (1 episode, 2012)
Self - Groom (1 episode, 2012)
Self - Owner, Ugly Modeling Agency (1 episode, 2012)
Self - Son Murdered, 1998 (1 episode, 2012)
Self - Daughter Murdered, 1984 (1 episode, 2012)
Self - Sociologist, University of California (1 episode, 2012)
Self - Anthropologist, Carleton College (1 episode, 2012)
Self - Neurologist, Semel Institute (1 episode, 2012)
Self - Serial Killers Ink (1 episode, 2012)
Self - African Art Historian, BGSU (1 episode, 2012)
Self - Bride (1 episode, 2012)
Self - Medical Director, Drake Institute of Behavioral Medicine (1 episode, 2012)
Self - Social Worker (1 episode, 2012)
Self - Dept. of Religion, Emory University (1 episode, 2012)
Self - Historian, City University of New York (1 episode, 2012)
Self - Psychiatrist, Columbia University Medical Center (1 episode, 2012)
laHimself - Neurologist, UC (1 episode, 2012)
Adman / Self (1 episode, 2012)
Self - Dept. of Sociology, Gergia State University (1 episode, 2012)
Self - Director of Housing Programs, DESC (1 episode, 2012)
Self - Pediatrician (1 episode, 2012)
Self - Jill's Husband (1 episode, 2012)
Self - Anthropologist, Macquarie University (1 episode, 2012)
Self - Anthropologist, Winthrop University (1 episode, 2012)
Self - Anthropologist, Dartmouth College (1 episode, 2012)
Self - Comedian & Wedding Officiant (1 episode, 2012)
Self - Assoc. Professor of Psychology, Harvard Medical School (1 episode, 2012)
Self - Texas Attorney (1 episode, 2012)
Self - Asst. Professor of Neurology, Harvard Medical School (1 episode, 2012)
Self - Cage Fighter (1 episode, 2012)