 The episode entitled "How Are Things In Glocca Morra?" (from the  first season) makes no reference to the song in the title. This is  because a subplot involving Isaac trying to remember the lyrics to  the song (from _Finians Rainbow (1968)_ (qv), incidentally) had to  be written out following Robert Guillaume (qv)s stroke. The  subplot resurfaces in the season two episode "Celebrities".