William Russ guest stars as Patrick O'Casey, the first heart bypass patient for Dr. Mark Craig (William Daniels) at St. Eligius, in a flashback to 1975. Daniels and Russ would later co-star as neighbors George Feeny and Alan Matthews in Boy Meets World (1993) from 1993 to 2000.
This is the only episode in which Dr. Westphall's late wife Maureen appears.
Terence O'Casey was born in 1945.
Kevin O'Casey was born in 1966.
Tommy Westphall was born in 1973.