This is one of two episodes of the series in which Edward Asner (Lou Grant) does not appear. The other being 1040 or Fight (1970). He appeared in every episode after Season 1.
Shelly Berman's character of 'Dr. Udall" shares the last name with Jack Nicholson's character "Melvin Udall" in "As Good As It Gets". Both projects were written by James L. Brooks.
Mary tells Rhoda that she speaks fluent Spanish.