Marie Osmond joins as host in the 4th season opener. Segments include Famous faces adorn U.S. currency; hypnotism in dental science; Hugo Ball Dadaism poetry; sound poets The Four Horsemen (poetry) in Toronto; Marfortadowg (festival of free screaming) in Italy; NASA Space Training Center and Manned Maneuvering Unit in Denver; Kevin Clarke and the 5-year photographic journey of a red couch across America;[12] Thailand chef Klinmahon.