The Canterbury Tales, winner of the Golden Bear, is a 1972 Pier Paolo Pasolini film based on Chaucer's story, which can be read online in language adapted for modern readers. The music is by Ennio Morricone. Tom Baker, my favorite Doctor, has a small role.
You can watch it online here, if you don't mind the lack of English subtitles:
It was a bit tedious for me, though, so I didn't make it very far. I need subtitles. I probably won't seek it out on DVD, because it gets poorer reviews than other of his films and seems to be out of print. There are probably others I'll want to see first.
Senses of Cinema examines it as the least successful middle film of the "Trilogy of Life".