Hasan Elahi, George Johnson Tonight Stephen welcomes science writer and author of The Ten Most Beautiful Experiments, George Johnson. Details Casts Galleries Posters Season Lists Title Hasan Elahi, George Johnson Genres News Comedy Release Date 2008-05-07 Episode Runtime 00 Hours 24 Minutes Season Number 4 Episode Number 62 Production Companies Busboy Productions, Spartina Productions Stephen Colbert... Self - Host... Original Size (1920x1080) Original Size (1280x720) Original Size (2000x3000) Season 1 32 Episode(s) 2005-10-17 Season 2 161 Episode(s) 2006-01-09 Season 3 138 Episode(s) 2007-01-08 Season 4 160 Episode(s) 2008-01-07 Season 5 161 Episode(s) 2009-01-05 Season 6 161 Episode(s) 2010-01-04 Season 7 124 Episode(s) 2011-01-03 Season 8 155 Episode(s) 2011-10-03 Season 9 155 Episode(s) 2012-10-01 Season 10 160 Episode(s) 2013-09-30 Season 11 40 Episode(s) 2014-09-29