Special Guest Stars Henry Winkler as Arthur Fonzarelli Guest Stars Richard Stahl as Mr. Marshall Stewart Mary Treen as Nana Shotz Kathryn Ish as Mrs. Marshall Stewart Co Starring David L. Lander as Andrew J. "Squiggy" Squigman Michael McKean as Leonard "Lenny" Kosnowski Lyman Ward as Tad Shotz Robert Ball as Butler Bob Brunner as Foreman