First showing of a film (8)
I believe the answer is:
premiere
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">first showing of a film</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for premiere that I've seen before include "Leading lady" , "First show" , "Opening performance" , "First screening" , "First public performance of a play or movie" .)