Eames: How did that even happen??
Cobb: Mr. Charles...? Oh yeah, that's me!
Saito: Lol, Fischer.
Fischer: *continues rolling*
Cobb, if you wanted Saito to be the one to lead Fischer down into the building, just say so...
I noticed this during either my second or third viewing... because the first time I was having enough trouble trying to remember who was who since I was much more focused on the plot than the characters.
I actually sketched this last week, but I forgot where I put it until I found it in one of my history books a few days ago
Inception (c) Christopher Nolan