"Christopher Nolan is a genius", you will read/hear this more in the coming couple of weeks at least in India which with amount of rhetoric pumped into everyday life as news and status updates on social networking sites is a considerable acheivement.
Nolan is a genius, agreed, for me not so much for the story that Inception is but for the story teller that he is . Intelligence is different from a genius in that a super stud scientist can always make a movie given you teach him the basic technicalities involved, intelligence can prosper in every field by virtue of the rules established in that field.
Nolans greatness lies in the fact that despite what his High IQ sheet may say he never forgets he is a story teller, he isnt one of those nerdy directors whose excitement dies ones the Idea loses its charm, Nolan knows his success is not so much in coming up a nerdy script , which with a bit of google and a group of super smart people probably any one can, he knows his success lies in creating a human story out of that idea and getting every one sucked into the plot irrespective of his/her IQ , ENTERTAIN them.
Nolan implants sign boards at every level of his script which are easier to follow than the traffic signals, his characters are not complex-these could have been half baked characters in any other script but this one , even Dicaprios monologue never deviates from the main plot , if anything is quintessential understanding the scientifc part of the script.
With Inception Nolan has achieved what probably Matrix failed too, at least when it was 1st released, claps in india at the end of the show :) .