List of episodes reusing past footage

These are episodes of  and  with flashbacks.

Season 3

 * I'd Rather Read It Myself
 * D.W.'s Perfect Wish

Season 5

 * Francine Goes to War

Season 6

 * Arthur Loses His Marbles (episode)

Season 13

 * The Great MacGrady

Season 16

 * The Best Day Ever

Season 1

 * Coming Together