Help with a critical analysis essay of the movie 1984
I would take a look at the SparkNotes page for 1984. Though it covers the book it dives deeply into the sociological themes found within 1984.
Chaucer's influence on literature and society
I found a short University of Oxford source that briefly discusses how Chaucer helped give birth to modern English. I'd say that is a big impact.
Though not as reputable there is a blog post that discusses Chaucer's discussion of taboo societal topics in his works.