Joseph Gordon-Levitt as Arthur in "Inception." (Top-Bottom) Ken Watanabe as Saito and Lukas Haas as Nash in "Inception." (L-R) Marion Cotillard as Mal and Leonardo DiCaprio as Cobb in "Inception." ...

While his role is small, Haas recalls having to get physical with DiCaprio's character when Nash is forced to wake him up from a deep sleep. A big no-no in the world of Inception. The actor ...