I thought about Franz Kafka's novella, the Metamorphosis. So many different levels you could analyse the story at, and a brilliant central metaphor.
I was also thinking the other day about movies with twist endings. You could talk about the power a director yields over the viewer by manipulating them to believe something. Ususally characters in the movie face the same problem. It builds on the idea knowledge is power.
Some I can think of off the top of my head are two of M. Night Shyamalan's ones: The Sixth Sense and the Village. Don't want to spoil anything though, but you might be surprised.
The Skeleton Key wouldn't be too bad either. Nor would Hide and Seek or Secret Window. Pretty much any movie with an unexpected ending for the character(s) and/or the viewer.
Classic Gothic literature like Bram Stoker's Dracula, Mary Shelley's Frankenstein and even Charlotte Bronte's Wuthering Heights aren't too bad either.
If you're into Anime a good film would be Hayao Miyazaki's Spirited Away or Howl's Moving Castle. The Neon Genesis Evangelion series or films would be good to look at too because of technique. Then you've got cartoons like Dragon Ball/Z/GT - but these probably aren't, what's the word...begins with 's' and kind of like legitimate?
Lasting, applying different readings to texts, or examining it from different perspectives can open new possibilities. So get in there and analyse.