Based on h Philip Van Doren Stern's 1945 short story "The Greatest Gift."

Someone correct me if I'm wrong, but I believe this adapted bits and pieces of "The Kree-Skrull War."

Pulled from many different Batman books, but notably from "The Long Halloween."

Again, from Wikipedia: "'The Princess Bride' is a 1973 fantasy romance novel written by William Goldman. ... It is presented as an abridgment (or "the good parts version") of a longer work by (the fictional) S. Morgenstern, and Goldman's 'commentary' asides are constant throughout."

From Wikipedia: "'Beauty and the Beast' (French: 'La Belle et la Bête') is a traditional fairy tale written by French novelist Gabrielle-Suzanne Barbot de Villeneuve and published in 1740 in 'La Jeune Américaine et les contes marins' ('The Young American and Marine Tales'). Her lengthy version was abridged, rewritten, and published first by Jeanne-Marie Leprince de Beaumont in 1756 in 'Magasin des enfants' ('Children's Collection') and by Andrew Lang in the 'Blue Fairy Book' of his 'Fairy Book' series in 1889, to produce the version(s) most commonly retold."

The finest adaptation, IMO. From Wikipedia: "'A Christmas Carol in Prose, Being a Ghost-Story of Christmas,' commonly known as 'A Christmas Carol,' is a novella by Charles Dickens, first published in London by Chapman & Hall in 1843..."

From a 1974 novel by Peter Benchley.

Loosely inspired by the 1981 comics story of the same name by Chris Claremont and John Byrne.

From Stephen King's 1982 novella "The Body," first published in his short-story collection "Different Seasons" from the same year.

Written by J.R.R. Tolkien and released in 3 volumes between 1954 and 1955.

From a 1969 novel by Mario Puzo.

From the 1950 novel by C.S. Lewis. Since I know the source material so well, ironically, of course this movie doesn't hold up very well for me. But I want Narnia to be on this list somewhere! :)