Piers Gibbon

饰：Narrator

基思·巴特利特

Keith Bartlett

饰：Senior policeman

Matthew Zajac

饰：Narrator,2 episodes, 2000-2001, / ...

Uri Geller

饰：2 episodes, 1990-1997

Sue Blackmore

饰：2 episodes, 1990-1997

尼古拉·达菲特

Nicola Duffett

饰：Narrator,1 episode, 1994,

丹尼·韦伯

Danny Webb

饰：Liam Keller,1 episode, 1998,

Dilly Barlow

Dilly Barlow

饰：Narrator,1 episode, 2006,

Robin Jenkins

饰：Self,1 episode, 1994,

Steve Mentor

饰：Self,1 episode, 1994,

Jon Croft

Jon Croft

饰：Richard Steiner,1 episode, 1998,

Manfred Clynes

饰：Self,1 episode, 1994,

Jack Chissick

Jack Chissick

饰：Scott Miller,1 episode, 1998,

Carly Pierce

饰：Self,1 episode, 1994,

John Wheatley

John Wheatley

饰：Robert Sinclair,1 episode, 1998,

Donna Haraway

饰：Self,1 episode, 1994,

Peter Tothwa

饰：Self,1 episode, 1994,

Wayne Gregory

饰：Self,1 episode, 1994,

Norman Foster

饰：Self - Architect,1 episode, 1989,

Stanton Friedman

饰：1 episode, 1990

Doris Collins

饰：1 episode, 1990

罗杰·麦格夫

Roger McGough

饰：Self - Narrator,1 episode, 1991,

蒂莫西·利瑞

Timothy Leary

饰：1 episode, 1992

Ron Toomer

饰：1 episode, 1992

Stan Kinsey

饰：1 episode, 1992

罗杰·彭罗斯

Roger Penrose

饰：Self,1 episode, 1993,

米兰达·理查森

Miranda Richardson

饰：Narrator,1 episode, 1994,

迈克尔·安杰利斯

Michael Angelis

饰：Narrator,1 episode, 1994,

Ted Deerhurst

饰：Self,1 episode, 1994,

Ricky Grigg

饰：Self,1 episode, 1994,

Jenny Randles

饰：1 episode, 1994

理查德·道金斯

Richard Dawkins

饰：1 episode, 1997

Banachek

饰：1 episode, 1997

Bob Couttie

饰：1 episode, 1997

加来道雄

Michio Kaku

饰：Self,1 episode, 1999,

Seth Shostak

饰：Self,1 episode, 1999,

杰弗里·帕尔默

Geoffrey Palmer

饰：Narrator,1 episode, 2000,

杰洛·比法

Jello Biafra

饰：Self,1 episode, 2000,

Kris Mohandie

饰：Self - Psychologist,1 episode, 2000,

安格斯·肯尼迪

Angus Kennedy

饰：Tom,1 episode, 2000,

爱麦虞埃尔·果尔德施坦因

Emmanuel Goldstein

饰：Self,1 episode, 2000,

Count Zero

饰：Self,1 episode, 2000,

Monikar Humshuar-Maresca

饰：Lianne,1 episode, 2000,

Murray Gell-Mann

饰：1 episode, 2000

Philip Gingerich

饰：Self (University of Michigan),1 episode, 2001,

Euan Nisbet

饰：Self (University of London),1 episode, 2001,

John Oxford

饰：1 episode, 2006

Jeffery Taubenberger

饰：1 episode, 2006

马丁·贾维斯

Martin Jarvis

饰：Narrator,2 episodes, 1986,

詹姆斯·兰迪

James Randi

饰：2 episodes, 1990-1997

Russell Targ

饰：2 episodes, 1990-1997

Ray Hyman

饰：2 episodes, 1990-1997

Heather Couper

饰：Self - Narrator,1 episode, 1994,

罗伯特·林赛

Robert Lindsay

饰：Self - Narrator,1 episode, 2001,

Christine Kavanagh

Christine Kavanagh

饰：Helen Parker,1 episode, 1998,

奥莱加·费多罗

Olegar Fedoro

饰：Victor Bunin,1 episode, 1998,

William Bargar

饰：Self,1 episode, 1994,

Burt Caesar

Burt Caesar

饰：Everett Barnes,1 episode, 1998,

Alistair Proctor

饰：Self,1 episode, 1994,

苏·艾略特

Su Elliot

饰：Multi media minister,1 episode, 1998,

Jonathan Hazell

饰：Self,1 episode, 1994,

Michaelle Fine

Michaelle Fine

饰：Anna Murkova,1 episode, 1998,

Chris Hables Gray

饰：Self,1 episode, 1994,

Christopher Hunter

饰：Video expert,1 episode, 1998,

Janet Amsden

Janet Amsden

饰：Chief Inspector,1 episode, 1998,

Camilla Simson

Camilla Simson

饰：RTE interviewer,1 episode, 1998,

Ben Aris

饰：Director General BBC,1 episode, 1998,

Marjorie Bland

Marjorie Bland

饰：Elizabeth Steiner,1 episode, 1998,

Bella Enahoro

Bella Enahoro

饰：Systems agent,1 episode, 1998,

乔纳森·米勒

Jonathan Miller

饰：Narrator,1 episode, 1986,

Béla Bollobas

饰：Self,1 episode, 1987,

大卫·尼尔

David Neal

饰：Narrator,1 episode, 1990,

H.J. Eysenck

饰：1 episode, 1990

理查德·奥布里恩

Richard O'Brien

饰：Narrator,1 episode, 1992,

Marc Davis

饰：1 episode, 1992

Sylvere Lotringer

Sylvere Lotringer

饰：1 episode, 1992

杰夫·高布伦

Jeff Goldblum

饰：Self - Host,1 episode, 1993,

Hans Moravec

饰：Self,1 episode, 1993,

汤姆·贝克

Tom Baker

饰：Narrator,1 episode, 1994,

保罗·达纳曼

Paul Daneman

饰：Narrator,1 episode, 1994,

菲尔·哈特诺尔

Phil Hartnoll

饰：Self,1 episode, 1994,

Peter Kurth

Peter Kurth

饰：Self,1 episode, 1994,

Ian Fergusson

饰：Self,1 episode, 1995,

安德鲁·内尔

Andrew Neil

饰：1 episode, 1997

Richard Wiseman

饰：1 episode, 1997

Doug Vakoch

饰：Self,1 episode, 1999,

Kent Cullers

Kent Cullers

饰：Self,1 episode, 1999,

内尔·皮尔森

Neil Pearson

饰：Self - Narrator,1 episode, 2000,

Mary Ellen O'Toole

饰：Self - FBI Supervisory Special Agent,1 episode, 2000,

Deth Veggie

饰：Self,1 episode, 2000,

Ed Cummings

饰：Self,1 episode, 2000,

Grandmaster Ratté

饰：Self,1 episode, 2000,

Terrence Tumpey

饰：1 episode, 2006