表演
lee silver/himself (2 episodes, 2000)
neil pearson/himself - narrator / ... (2 episodes, 2002-2004)
seth lloyd/himself (2 episodes, 2006-2007)
伯纳德·希尔/himself - narrator / ... (8 episodes, 2001-2006)
richard dawkins/himself / ... (2 episodes, 1986-2003)
hugh quarshie/himself - narrator / ... (3 episodes, 1994-1998)
michio kaku/himself (3 episodes, 2002-2004)
茱丽叶特·斯蒂文森/herself - narrator (2 episodes, 1996-2002)
story musgrave/himself (2 episodes, 2000-2001)
aden gillett/himself - narrator (1 episode, 1999-2003)
siobhan redmond/narrator
pete larson/himself (2 episodes, 2002-2004)
比尔·帕特森/himself - narrator (2 episodes, 2003-2006)
emma fielding/herself - narrator (2 episodes, 2000-2002)
carter clarke/himself (2 episodes, 2000-2004)
nigel le vaillant/himself - narrator (2 episodes, 1997)
struan rodger/himself - narrator (2 episodes, 2006)
凯西·泰森/narrator
herbert strong/himself (2 episodes, 2000-2004)
french anderson/himself (2 episodes, 2000-2003)
dilly barlow/herself - narrator / ... (16 episodes, 1999-2005)
kenneth nealson/himself (2 episodes, 2000-2001)
boris feigelson/himself (2 episodes, 2000-2004)
barbara flynn/herself - narrator / ... (5 episodes, 2003-2006)
veronika hyks/narrator
阿曼达·莱德曼/narrator
阿曼达·波顿/herself - narrator (1 episode, 2003-2005)
martin rapaport/himself (2 episodes, 2000-2004)
bill mcguire/himself (5 episodes, 2000-2005)
tracy hall/himself (2 episodes, 2000-2004)
约翰·斯拉普内尔/himself - narrator (7 episodes, 2000-2004)
monica grady/herself (2 episodes, 2001-2003)
matthew carrano/himself (2 episodes, 2000-2002)
paul wignall/himself (2 episodes, 2002)
philip currie/himself (2 episodes, 2000-2002)
伊安·霍姆/himself - narrator
raymond kurzweil/himself (2 episodes, 2004-2006)
vilayanur ramachan../himself (2 episodes, 2003-2004)
iain stewart/himself (2 episodes, 2002-2003)
比尔·奈伊/himself - narrator / ... (2 episodes, 2006)
greg stock/himself (2 episodes, 2000-2001)
susan jebb/herself (2 episodes, 2002-2004)
michael rampino/himself (2 episodes, 2000-2002)
约翰·西姆/himself - narrator (1 episode, 2004)
alex grizenko/himself (2 episodes, 2000-2004)
janet reimer/herself (2 episodes, 2000-2004)
史蒂芬·曼甘/narrator
ian russell/himself (2 episodes, 2002-2003)
robert hazen/himself (2 episodes, 2000-2004)
约翰·汉纳/himself - narrator (2 episodes, 2006-2008)
jo unwin/herself - narrator (4 episodes, 1996-1997)
琳赛·邓肯/narrator
stephen lussier/himself (2 episodes, 2000-2004)
paul vaughan/narrator / ... (4 episodes, 1972-1995)
ken feder/himself (3 episodes, 1999-2002)
jack fortune/himself - narrator / ... (23 episodes, 1999-2006)
彼得·卡帕尔蒂/narrator (2 episodes, 2008)
