The Inception Movie explained to my son (by Donald Duck, none the less) [1]. Almost all the scenario and the "innovative" concepts of the film come from a 2004 Scrooge McDuck comic.

I've linked to Cracked (even though they might not be seen as the most serious source) because their account is detailed and very documented.

1. http://www.cracked.com/article_19021_5-amazing-things-invent...