One of the clips shown is from the episode "Forbidden Fruit" from Season 3. Presumably it was lined up for production, but held up for the next season.
Medfly makes a reference to the USA network repeatedly replaying the first season of Duckman. As anyone who was a viewer in that early period knows, it is a very apt commentary. So much so that the constant airings were even used as a joke in one of the promos for the show's second season.