In the Ghost of Christmas Yet-To-Come sequence, Bob (Kermit) arrives home while his family is preparing Christmas dinner. As with the Ghost of Christmas Present sequence, the Cratchits' eldest son, Peter, is turning a roast goose on a spit over the fireplace. The family stops their activities to comfort Bob. After the family has had their heartfelt discussion about their sorrow over Tiny Tim's passing, the camera pans over to the chair by the fireplace where Tim's crutch and hat are preserved. The fireplace can be seen in the background and there is no goose on the spit. However, this moment is after the family has started dinner, so naturally the goose is no longer on the spit.
There is a common misconception that people only say "Merry Christmas" in America and "Happy Christmas" in Great Britain. In fact, both expressions originated in England. Charles Dickens had several characters in A Christmas Carol say "Merry Christmas".
When Scrooge is lighting the lamp to perform a search of the house, it is an obvious electric light. Since the film is presented as a theatre-play where they used whatever props were available, this can be seen as deliberate.
Charles and Rizzo are selling "Red Delicious" apples, a breed developed in 1880. Since the film is presented as a theatre-play where they used whatever props were available, this can be seen as deliberate.
During the Fozziwig party, Animal and Rowlf are playing a modern drum kit and piano. Since the film is presented as a theatre-play where they used whatever props were available, this can be seen as deliberate.
Although Scrooge's nephew Fred is seen enjoying Christmas dinner with Scrooge and the Cratchit family at the very end of the film, his wife Clara is noticeably absent. She could possibly be seated across from Fred and therefore out of view of the camera, but it is never made clear. Brian Henson explains in the DVD commentary that Robin Weaver was unavailable the day the party scene was filmed.
When Cratchit is singing and carrying Tiny Tim down the street on his shoulders, the floor keeps moving underneath him after he stops walking.
The Marleys make a remark about "teddy bears" in the 1840s. The first Teddy Bear was presented in 1903, and named for President Theodore Roosevelt, who was born in 1858.
Red Delicious apples (mentioned by Gonzo) didn't get that name until 1914, decades after the story is set.
During the closing scene the camera moves backwards to reveal the singing guests around the table. As they sing "never quite alone", the top of a puppeteer's head comes into view in the lower left-hand corner. The performer, who seems to be looking down at a monitor, has a blonde ponytail and is crouched behind the group of rats next to Fred.
When Scrooge leaves the counting house to go home, it's dusk or twilight.
Because England along with the rest of the British Isles is in the northern hemisphere, it would actually already be pitch dark after 4 pm at that time of year due to latitude.
Because England along with the rest of the British Isles is in the northern hemisphere, it would actually already be pitch dark after 4 pm at that time of year due to latitude.
Scrooge begrudgingly gives Cratchit the day off as no other businesses will be open on Christmas Day. At the end of the film, though, he has a boy buy a turkey and appears to buy several presents.
When Scrooge is showing Dr. Honeydew and Beaker the door, it would appear Beaker flips off Scrooge and it somehow slipped past the censors, likely due to the fact that Beaker doesn't actually have fingers.
When Bob Cratchit closes the office door at the beginning of the film, he locks the door with a key. Apparently this lock doesn't work right: at the end of the film when Scrooge walks around town singing, he opens the same door without a key.