I've been meaning to show you guys these things for a while.
I actually already knew that Inception had an online comic released as a promotional gimmick, which gives a little bit of background on Dom Cobb and his team.
It's the story of one of their previous extraction jobs, the one that ultimate lands them in trouble with COBOL Engineering Company, which is mentioned in the beginning of the movie.
Something I found while I was researching, however, that I though was really nifty, is a user manual for the PASIV device, or the Ladder, the machine which makes Dream-Share technology possible in the story.
I've said it before and I'll say it again: Oh, the joys of the internet.
Also, here's my paper.