Edward T. O'Donnell (Self - Historian: College of the Holy Cross), James Taylor (Self - Curator: American Dime Museum), Austin Rogers (Self - Jeopardy! All Star), Kenneth M. Kamler (Self - Orthopedic Surgeon), Paul Sutter (Self - Physicist, Author), Brian Kopell (Self - Neurosurgeon), Thor Hanson (Self - Biologist, Author), Mitch Horowitz (Self - Author, Historian), Joseph Dituri (Self - Biomedical Engineer), Hakeem Oluseyi (Self - Astrophysicist, Author)