This is the first appearance of Dr Verbeena Beaks, the psychologist for Project Quantum Leap.
Sam Beiderman is the first leapee whose reflection is not seen.
The personalities from previous leaps of Samantha Stormer (What Price Gloria? - October 16, 1961 (1989)), Jesse Tyler (The Color of Truth - August 8, 1955 (1989)), Herbert "Magic" Williams (The Leap Home: Part 2 (Vietnam) - April 7, 1970 (1990)), Tom Stratton (Genesis: Part 1 - September 13, 1956 (1989)), Boxer Kid Cody (The Right Hand of God - October 24, 1974 (1989)) and Jimmy Lamotta (Jimmy - October 14, 1964 (1989)) take over after Sam's initial electroshock treatment.
Sam sees the mirror reflection of three other people he leaped into at different times, but not the person who he actually leapt into in this leap.
Al tells Sam he has 7 Doctorate Degrees including Medicine and Quantum Physics.