Great post by the XKCD online comic series! They occasionally post a infographic-style piece, and this one doesn't disappoint.
Created by Randall Munroe at XKCD, the Movie Narrative Charts plot the interactions between key characters on a timeline, grouping the character lines together when they are interacting in the movies. He obviously spent some time working on these, and be sure to check out the detail in the full size version.
The last two are jokes, but the ones for Lord of the Rings, the original Star Wars Trilogy and Jurassic Park are real and very well done. I love the Primer chart poke at trying to follow the movie! Not as mainstream as the other movies, but it's definitely appropriate. I'd love to see how Randall would chart Memento!