I don't think we've ever had a thread like this before... One that disucsses segments that could have and probably were made on the same day. This is probably true about many inserts using recurring sketches and sets... The performers and puppets are already there, and the sets are already set-up, and the characters are in the right costumes, so that'd make sense. It seems like many sketches featuring children were doen on the same day, evident by how the kids dress and the backgrounds. Most of John-John's segments that we know about were probably taped on the same day, considering that most of them show John-John in the same red (or is it orange?) shirt, the same blue background, and they feature John-John interracting with characters performed by either Frank Oz or Jerry Nelson (mainly Bert, Grover, and Herry... and one featured both Bert and Sherlock). It's been said that John-John has been a regular kid visitor, but I don't know of many John-John inserts using different sets or with him in different outfits. I know he appeared on the street in the episode where Mr. Hooper studied for night school (though judging by the pictures at Muppet Wiki his outfit wasn't too different... Just a long-sleeved red shirt as opposed to a short-sleeved one). The 40th anniversary book also has an image of Kermit interviewing John-Jon outdoors, John-John dressed in winter clothes (I wonder if that one was made the same day as Kermit's interview with a girl about animal sounds). I also feel convinced that Monsterpeice Theater: Me, Claudias, Me Lost Me Cookie at the Disco, and We're All Monsters were mad eon the same day. All of the background monsters in me Lost Me Cookie were in either Me, Claudias or We're All Monsters (or both, in the case of Elmo and Harvey). Cookie Monster was in two of these mentioned sketches as well, and in both Me, Claudias and We'e All Monsters, Harvey and Elmo have the same performers. Sets and costumes would have had to be changed, and I don't know how long those changes would normally take (I often wonder how loing it normally takes to dress or change a puppets clothes). And all of those sketches are from season 11 (and I guess another sketch that would have been done the same day would have been the monsters singign "Near and Far", as that has the same mosnters and background as "We're All Monsters"). I would also expect both "Kermit News: Sleeping Beauty" sketches to have been filmed in the same day. They both had the same sets, and the same anything muppet designs for Prince Charming and Sleeping Beauty (though Prince Charming's facial expressions are somewhat different in both), and obviously they are both from the same season judging by the look of Kermit and his dark brown hat. And obviously many celebrities who appeared in multiple isnerts in the same seasons did it all in one day. They were often on the same sets in the same outfits, and they wore different outfits if they returned in later seasons.