One-Scene Wonder: One could argue this for Christopher Lloyd's one-time guest performance as Alastair Dimple in the episode "Another Point of View" in the sense that he won a Primetime Emmy in the category of "Outstanding LEAD Actor in a Drama Series" over such veteran performers like Sam Waterston in Ill Fly Away and Scott Bakula in Quantum Leap. Somewhat justified in that the Emmys had omitted the category of "Outstanding Guest Actor" that year.
The Scrappy: Davy Keith started as a tolerable Cousin Oliver, but reached scrappy levels when he took the focal point away from the other main characters.
She Really Can Act: Patricia Hamilton has always done a great job as Rachel, but her performance in "Home is Where the Heart is", portraying a debilitated Rachel who is unable to speak was outstanding.
Tear Jerker: Gus to his newfound mother about his father: "He ruined your life. And mine too."
You Look Familiar: Several instances throughout Sullivan's Avonlea universe: Mag Ruffman, Cedric Smith, and Jackie Burroughs all had small roles in the mini-series before playing the King siblings. Rosemary Dunsmore had a large role, as Katherine Brooke, in the sequel, before getting a guest role as Aunt Abigail. James O'Reagan also had a small scene in the sequel, before appearing as Abner Jeffries a number of times.