"Inception” director Christopher (5)
I believe the answer is:
nolan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">inception director christopher</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nolan that I've seen before include "Film director - singing sisters" , "Sir Sidney - - , Australian painter" .)