This movie, the best film version of Dickens' A Christmas Carol, also screens at the cinema on December 22nd and 27th (full details here). Tom Charity's review below is an honest and excellent one but I defy you not to be moved by Sim's central performance and it is this Ghost of Christmas Future that has haunted me since I saw this film as a ten-year-old.
Time Out review:
Surprisingly, there isn't a film version of the Dickens novella which merits the imprimatur 'classic'. The Muppets had a good stab at it, and Bill Murray was well cast in the otherwise scattershot Scrooged. On the plus side, this version is cast like an engraved illustration: Miles Thesiger, Mervyn Johns, Michael Hordern, Kathleen Harrison, Ernest Malleson, Hermione Baddeley and, above all, the splendidly aloof Alastair Sim, who feasts on Dickens' best lines ('I expect you want the whole day off tomorrow?'), greets each new ghost with a weary shiver, and handles his giddy rebirth with aplomb. A jobbing director who knew how to point a camera, Brian Hurst never betrayed much facility for cutting or movement. He stages the action competently, but the transitions between scenes are so choppy you wonder where the ads are. Add to this a prosaic adaptation by Noel Langley which gets bogged down in the backstory (the relatively dull visitation from the ghost of Christmas Past which explains how nice Ebenezer - a bashful George Cole - fell from the path of righteousness), some rather depressed-looking spirits, and the cringeworthy sentimentality of the Tiny Tim scenes, and you have what Scrooge himself might call 'Ho-hum-bug'.
Here (and above) is the trailer.