While It's a Wonderful Life might be the greatest Christmas movie of all time, A Christmas Carol is likely the greatest Christmas story.
Growing up on the Albert Finney Scrooge, I am very familiar with the plotpoints, yet seeing it with this 50s British cast, I was particularly impressed by the performances. Alastair Sim plays a perfect Scrooge, in that he is both believable as grumpy Scrooge and happy Scrooge.
The story embodies so much of what is great about Christmas, from helping the poor to being generous and good to the people in your life. It takes a man with seemingly no redeemable qualities, makes you care about him, and turns him into a flawed but caring lead. It reminds you that it's never too late to change, and every day you choose to be the person you are.
Fantastic story, and an incredible adaptation.