Emily asks Bob what she could do if they move to the country and suggests she could teach in a one room schoolhouse. She played Annie Hayworth in Alfred Hitchcock's "The Birds" and was a teacher in a one room schoolhouse.
One of the professors interviewing Dr. Hartley has the surname "Doctor", and is thus addressed as "Doctor Doctor". In Mike Nichols' 1970 film adaptation of Joseph Heller's "Catch-22", Bob Newhart played Major Major.