Actor | Producer
... 1999 - 2024
Narrator (voice) ( Actor )
... 2021 - 2023
... 1975 - 2022
... 1967 - 2018
... 2006 - 2014
... 2002 - 2009
... 1999 - 2006
Luke Larson ( Actor )
... 1993
... 1982 - 1988
Dr. Steven Kiley ( Actor )
... 1969 - 1976
... 1966 - 1967
... 1964 - 1965
... 1961 - 1962
