Starsky and Hutch were police partners and best friends, but they would never directly call each other by their first names - except in two disco scenes in two episodes where they're introducing each other. The other episode being Starsky's Brother (1978).
Television debut of Adrian Zmed.
The first few notes of "Funkytown" are heard playing in the Disco, but quickly are covered up by a different tune. The production evidently refused to pay for the rights to air it.
An episode obviously influenced by the Disco craze of the era, since "Saturday Night Fever" had been released months early. "Disco Inferno" a song featured on the movie soundtrack, is covered in the episode.
Many other era shows had the one "Disco" episode, including Disco Angels (1979) and Disco Inferno - April 1, 1976 (1989) (traveling back in time to 1976).