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The Munsters: 1x38

Yes, Galen, There Is a Herman (a.k.a) My Friend Herman

Herman saves the life of a young boy, Galen Livingston Stewart, by bending the bars his head is stuck between. They immediately become close friends. The only problem is that Galen’s parents think Uncle Herman is a figment of the boy’s imagination. They take him to a psychiatrist, played by Harvey Korman with a broad German accent.

The Munsters: Season 1 Episode 38
Jun. 10, 1965