William Sylvester

2013

The 9th Wonder of the World: The Making of 'Gorgo'

as Sam Slade (archive footage)

7.2

2001

2001: The Making of a Myth

as Dr. Heywood R. Floyd (archive footage) (uncredited)

6.9

1980

First Family

as TV Commentator Howard

4.3

1976

Riding with Death

as Leonard Driscoll

1.9

1975

The Hindenburg

as Luftwaffe Colonel

6.3

1974

Busting

as Mr. Weldman

6.4

1973

Don't Be Afraid of the Dark

as Tom Henderson

6.5

1970

The Lawyer

as Paul Harrison

6.7

1968

The Hand of Night

as Paul Carver

4.5

1968

2001: A Space Odyssey

as Dr. Heywood Floyd

8.3

1965

Devils of Darkness

as Paul Baxter

4.9

1964

Devil Doll

as Mark English

4.9

1964

Ring of Spies

as Gordon Lonsdale

6.5

1964

Blind Corner

as Paul Gregory

6.8

1963

Incident at Midnight

as Vince Warren

5.8

1961

Gorgo

as Sam Slade

5.6

1955

Portrait of Alison

as Dave Forrester

6.4

1954

What Every Woman Wants

as Jim Barnes

6.2

1953

Albert R.N.

as Texas

6.6

1953

Appointment in London

as Mac

6.5

1953

The Yellow Balloon

as Len Turner

6.8

1949

Give Us This Day

as Giovanni

7.3