Ellen Page, Cillian Murphy and Marion Cotillard are all signed on for Christopher Nolan's new brain-buster of a movie, Inception. Thankfully, the casting news also included some additional information about the film.

The only plot known for Nolan's Inception is that it's set "within the architecture of the mind," which could be anything. But we now know that Page will be playing a grad student who is a kind of "sidekick" to Leonardo DiCaprio, who is apparently a CEO.

Cotillard will play Leo's wife, Page, and I have no clue what the Scarecrow will be doing there - but you can bet it will be creepy. The film will be released in 2010 but hopefully we'll learn more about it before then.

[The Hollywood Reporter]