Self - Narrator (62 episodes, 2010-2017)
Self / Self - Cosmologist / Self - Cosmologist, California Institute of Technology / Self - Physicist, California Institute of Technology (6 episodes, 2010-2014)
Self - Theoretical Physicist / Self - Phd., Theoretical Physicist (5 episodes, 2011-2015)
Self / Self - Theoretical Physicist (4 episodes, 2010-2015)
Self - Astrophysicist (4 episodes, 2010-2015)
Self - Theoretical Physicist / Self - Physicist (4 episodes, 2011-2014)
Self - Cosmologist / Self - Physicist, Astrobiologist (3 episodes, 2010-2012)
Self - Physicist / Self - Physicist, Perimeter Inst. for Theoretical Physics, Waterloo, Canada / Self - Theoretical physicist (3 episodes, 2010-2012)
Self / Self - Barnard College / Self - Theoretical Physicist (3 episodes, 2010-2011)
Self - Mathematical Physicist (3 episodes, 2010-2011)
Self - Theoretical Physicist, Oxford University (2 episodes, 2010-2012)
Self - Cognitive Neuroscience Researcher (2 episodes, 2010-2011)
Self - Cosmologist (2 episodes, 2010-2011)
Self - Theoretical Physicist, Princeton University (2 episodes, 2010-2011)
Self - Game Designer (2 episodes, 2010)
Self - MIT / Self - Theoretical Physicist (2 episodes, 2010)
Self - Particle Physicist / Self - Particle Physicist, M.I.T (2 episodes, 2010)
Self - Princeton University / Self - Theoretical Astrophysicist (2 episodes, 2010)
Self - Neuroscientist, Baylor College of Medicine (2 episodes, 2011-2012)
Self - M.D, Scientist (2 episodes, 2012)
Self - Head of Human Dynamics Lab, M.I.T (2 episodes, 2012)
George santiago / Tony Silva (2 episodes, 2015)
Self - Theoretical Physicist (1 episode, 2010)
Self - Physicist and Astrophysicist, Fermilab (1 episode, 2010)
Self - Experimental Physicist (1 episode, 2010)
Self - Astronomer (1 episode, 2010)
Self - Physicist, Perimeter Institute (1 episode, 2010)
Self - Particle Physicist (1 episode, 2010)
Self - NASA Ames Research Center (1 episode, 2010)
Self - Astrophysicist (1 episode, 2010)
Self - Physicist (1 episode, 2010)
Self - Phd., Geochemistry (1 episode, 2010)
Self - Principal Investigator for NASA's Kepler Mission (1 episode, 2010)
Self - University of California, Berkeley (1 episode, 2010)
Self - Chemist (1 episode, 2010)
Self - Max Planck Institute (1 episode, 2010)
Self - University College London (1 episode, 2010)
Self - Microbiologist (1 episode, 2010)
Self - Phd., Astronomer, University of California, Berkeley (1 episode, 2010)
Self - Geologist (1 episode, 2010)
Self - Biologist (1 episode, 2010)
Self - CDMS Project Manager and Fermilab Scientist, Fermilab (1 episode, 2010)
Self - Astronomer, SETI (1 episode, 2010)
Young Morgan Freeman (1 episode, 2010)
Self - Experimental Particle Physicist (1 episode, 2010)
Self - Phd., Physicist (1 episode, 2010)
Young 16yo Morgan Freeman (1 episode, 2010)
Self - Argon National Laboratory, Chicago (1 episode, 2010)
Self - Planetary Scientist (1 episode, 2010)
Self - Physicist, Royal Observatory Edinburgh (1 episode, 2010)
Self - Atomic Scientist (1 episode, 2010)
Suzuki Watamura (1 episode, 2011)
Self - Astrophysicist, MIT, Cambridge (1 episode, 2011)
Self (1 episode, 2011)
Self - Senior Astronomer, SETI Institute (1 episode, 2011)
Self - Neurosurgeon (1 episode, 2011)
Self - Biologist (1 episode, 2011)
Self - Anti-Aging Expert (1 episode, 2011)
Self - Institute for Noetic Science (1 episode, 2011)
Self - Physicist (1 episode, 2011)
Trouble (1 episode, 2011)
Self - Philosopher and Cognitive Scientist (1 episode, 2011)
Self - Director of Radiation Laboratories (1 episode, 2011)
Self - Atomic physicist, Yale University (1 episode, 2011)
Self - Phd,. Anesthesiologist, University of Arizona (1 episode, 2011)
Self - Phd., Biology and Engineering, CalTech (1 episode, 2011)
Self - Professor of Gerontology (1 episode, 2011)
Self - Psychiatrist (1 episode, 2011)
Self - Astrophysicist (1 episode, 2011)
Self - Cognitive scientist (1 episode, 2011)
Self - Theoretical Physicist, Clemson University (1 episode, 2011)
Self - Phd., Physics and Astronomy (1 episode, 2011)
Self - Philosopher of Physics (1 episode, 2011)
Self - Georgia Institute of Technology (1 episode, 2011)
Self - Theoretical Physicist and String Theorist (1 episode, 2011)
Self - University of Chicago (1 episode, 2011)
Self - Quantum Physicist, University of Maryland (1 episode, 2011)
Self - Astronomer (1 episode, 2011)
Self - Wife of Dimitar Sasselov, BFA in Painting (1 episode, 2011)
Self - Phd., Physicist (1 episode, 2011)
Self - Synthetic Biologist (1 episode, 2011)
Self - Astronomer, University of New South Wales, Sydney (1 episode, 2011)
Self - Theoretical Physicist (1 episode, 2011)
Self - Kepler Lead Scientist, Harvard (1 episode, 2011)
Self - Perimeter Institute (1 episode, 2011)
Self - Paleontologist, Harvard (1 episode, 2011)
Self - Cosmologist (1 episode, 2011)
Self - Tilburg University (1 episode, 2011)
Self - Professor of Psychology (1 episode, 2011)
Self - Theoretical Physicist, Stanford Linear Accelerator, California (1 episode, 2011)
Self - Neuroscientist (1 episode, 2011)
Self - M.D., Phd., University of Wisconsin (1 episode, 2011)
Self - Experimental Physicist, Caltec (1 episode, 2011)
Self - Executive Director of Long Now Foundation (1 episode, 2011)
Self - Global Consciousness Project (1 episode, 2011)
Self - Neurobiologist (1 episode, 2011)
Self - Geologist (1 episode, 2011)
Self - Phd., Theoretical Particle Physicist and Cosmologist, Harvard University (1 episode, 2011)
Self - Cryobiologist (1 episode, 2011)
Self - Biochemist, MIT, Cambridge (1 episode, 2011)
Self - Quantum Physicist (1 episode, 2011)
Self - Theoretical physicist (1 episode, 2011)
Self - Phd., Theoretical Physicist, University of Utrecht (1 episode, 2011)
Self - String Theorist (1 episode, 2011)
Self - Experimental Physicist (1 episode, 2011)
Man with Clone (1 episode, 2012)
Self - Neuroscientist (1 episode, 2012)
Self - Astrophysicist (1 episode, 2012)
Self - Experimental Psychologist, Harvard (1 episode, 2012)
Self - Professor, Intelligent Robotics Laboratory (1 episode, 2012)
Self - Paleoanthropologist, Wisconsin-Madison University (1 episode, 2012)
Self - Physicist, Harvard (1 episode, 2012)
Self - Paleontologist, University of Washington, Seattle (1 episode, 2012)
Self - Neuroscientist, Massachusetts University (1 episode, 2012)
Self - Psychologist (1 episode, 2012)
Self - Neurottheology (1 episode, 2012)
Self - Benson-Henry Institute for Mind Body Medicine, Boston (1 episode, 2012)
Self - Director, Centre of the Mind, Univ. of Sydney (1 episode, 2012)
Self - Theoretical Physicist (1 episode, 2012)
Self - Physicist (1 episode, 2012)
Self - Cosmologist (1 episode, 2012)
Self - Psychologist, McGill University, Montreal (1 episode, 2012)
Self - Heart Surgeon, Yale-New Haven Hospital (1 episode, 2012)
Self - Particle Physicist, Santa Fe Institute (1 episode, 2012)
Self - Physicist, Chapman University (1 episode, 2012)
Self - Linguistic Psychologist (1 episode, 2012)
Self - Professor of Astrobiology, Univ. of Edinburgh, Scotland (1 episode, 2012)
Self - Indiana University, Bloomington (1 episode, 2012)
Self - Neuroscientist, Lawyer (1 episode, 2012)
Self - Child Psychologist, University of California, Berkeley (1 episode, 2012)
Psychopath (1 episode, 2012)
Self - Comparitive Psychologist (1 episode, 2012)
Self - Neurologist (1 episode, 2012)
Self - Anthropologist (1 episode, 2012)
JPL, Pasadena, California / Self - Exotic Propulsion specialist, NASA (1 episode, 2012)
Self - Regenerative Medicine Research at Texas Heart Institute (1 episode, 2012)
Self - Communications Expert, SETI (1 episode, 2012)
Self - MD (1 episode, 2012)
Self - Neuroscientist, University College, London (1 episode, 2012)
Self - Director, Resuscitation Science, UPenn (1 episode, 2012)
Self - Neuroscientist, State University of New York (1 episode, 2012)
Self - Nobel Price in Physics (1 episode, 2012)
Self - Scientist, Yale University (1 episode, 2012)
Man's clone. (1 episode, 2012)
Self - Professor of Artificial Intelligence, Lugano, Switzerland (1 episode, 2012)
Self - Theoretical Physicist, New York University (1 episode, 2012)
Self - Sociologist, University of Delaware (1 episode, 2012)
Self - String Theorist (1 episode, 2012)
Self - Patient (1 episode, 2012)
Self - Neuroscientist, Mind Research Network, Albuquerque (1 episode, 2012)
Self - Neuroscientist, Memory Lab, University of Auckland (1 episode, 2012)
Self - Neuroscience Professor (1 episode, 2012)
Self - Weisman Inst. of Science, Israel (1 episode, 2012)
Self - Professor of Mechanical Engineering, M.I.T. (1 episode, 2012)
Self - Neuroscientist, Washington University School of Medicine (1 episode, 2012)
Self - Experimental Physicist, Oxford University (1 episode, 2012)
Self - Physicist, NASA (1 episode, 2012)
Self - Computer Engineer, University of Manchester (1 episode, 2012)
Self - Evolutionary Biologist (1 episode, 2012)
Self - Search-Engine Specialist (1 episode, 2012)
Goddard Space Flight Center / Self - Chemist, NASA (1 episode, 2012)
Self (1 episode, 2013)
Self - Theoretical Physicist, Fermilab (1 episode, 2013)
Self - Experimental Physicist (1 episode, 2013)
Self - Director, Cern (1 episode, 2013)
Self - Future Scientist (1 episode, 2013)
Self - Particle Physicist, Harvard University (1 episode, 2013)
Self - Theoretical Physicist, Cern (1 episode, 2013)
Self - Theoretical Physicist, Univ. of Southern Denmark, Odense (1 episode, 2013)
Self - Neuroscientist (1 episode, 2013)
Self - Particle Physicist, Cern (1 episode, 2013)
Self - Astrophysicist (1 episode, 2014)
Zombie Patient Zero (1 episode, 2014)
Twins (1 episode, 2014)
Self - Physicist (1 episode, 2014)
Self - Tennis Player (1 episode, 2014)
Self - University of Virginia Professor (1 episode, 2014)
Self (1 episode, 2014)
Self - Williams College (1 episode, 2014)
Self - Clinical Assistant Professor of Environmental Studies at NYU (1 episode, 2014)
Self - Psychologist (1 episode, 2014)
Self - Founder and Director of Center for Neuroscience and Society at the University of Pennsylvania (1 episode, 2014)
Self - Woods Hole Oceanographic Institution (1 episode, 2014)
Self - Evolutionary Biologist (1 episode, 2014)
Self - Brown University (1 episode, 2014)
Self - Cosmologist and Theoretical Physicist (1 episode, 2014)
Self - Comparative Psychologist (1 episode, 2014)
Self - Applied Mathematician (1 episode, 2014)
Self - Child Psychologist (1 episode, 2014)
Self - Artificial Intelligence Researcher (1 episode, 2014)
Self - Professor, University of Maryland (1 episode, 2014)
Black Teen in Hoody (1 episode, 2015)
Weather Report Woman (1 episode, 2015)
Improv Actor (1 episode, 2015)
Lying Boyfriend (1 episode, 2015)
Rain Man (1 episode, 2015)
African American Teen (1 episode, 2015)
Self (1 episode, 2015)
Incompetent Foe (1 episode, 2015)
Doctor (1 episode, 2015)
Woman on Bench (1 episode, 2015)
Self - Astrophysicist, Berkeley SETI Research Center (1 episode, 2015)
Improv. Actor (1 episode, 2015)
Female Powerhouse Executive (1 episode, 2015)
Teenage Girl (1 episode, 2015)
Self (1 episode, 2016)
Homeowner (1 episode, 2016)
Football Fan (1 episode, 2016)
Study Subject (1 episode, 2016)
Wyatt's Mom (1 episode, 2016)
Self - Ballet Dancer (1 episode, 2016)
Delinquent (1 episode, 2017)
Self (1 episode, 2017)
Delivery man (1 episode, 2017)
Graffiti Punk (uncredited) (1 episode, 2015)