Dr. Peter Singer Tonight Stephen welcomes Princeton ethicist, animal rights activist and co-author of The Way We Eat: Why Our Food Choices Matter, Dr. Peter Singer Details Casts Title Dr. Peter Singer Genres News Comedy Release Date 2006-12-11 Episode Runtime 00 Hours 24 Minutes Season Number 2 Episode Number 155 Production Companies Busboy Productions, Spartina Productions Stephen Colbert Self - Host