When Good Fellows Get Together - S3-E8
Revealing mistake: In the final scene when Hymie is fighting Groppo, Hymie is a blatant stunt double in several shots, evidenced by the different shaped head of the double.
Get Smart (1965)
1 mistake in When Good Fellows Get Together - chronological order
Starring: Barbara Feldon, Don Adams, Edward Platt, Robert Karvelas
School Days - S1-E3
Max: When the moon is full, the tide is high.
Old Lady: You must want the spy school, that's next door.
More trivia for Get Smart