Sesame Street episodes with recycled plots
From Muppet Wiki
On Sesame Street, in order to produce 130 shows a season, sometimes the street scenes from an episode that aired two seasons before were recycled and combined with a different set of inserts to create a new episode. This list contains all known episodes which contain the same street plots. This practice started as early as Season 6 and lasted until Season 33, since the episode total diminished in later seasons.
Due to the introduction of Elmo's World, no episodes in Season 30 and Season 31 had any recycled plots from Season 28 and Season 29.
