As Smart steps out of Dr. Abbott's office, his image freezes, and we hear his voice-over dialogue with the physician. This is a parody of NBC's concurrent series, Run for Your Life (1965), starring Ben Gazzara.
When Smart steps out of the Dr's office, the name on the door reads "Abbott Norman M.D.". This is to represent this episodes director, Norman Abbott.
Several remarks in the goofs on episodes mention being able to tell Don Adams had a stunt double. Adams was a WWII combat Marine Veteran and a Drill Instructor. He could have done his own stunts if the Insurance provider had signed off.