Ernie (Barry Livingston) is fascinated with 007/James Bond in this episode. At the time this episode aired (1965) the James Bond character was being portrayed by Sean Connery and "Thunderball" was released that same year.
Jeanette Nolan, who played the ballet teacher, had played Bub's 104 year old aunt the previous season.
Some secret agent-esque guitar riffs can be heard when 007 Ernie appears.