sorry, i guess (and hope) that this won't happen. it's possible to do it (technical side of the story) but it doesn't make much sense cause search index would blow up and so the search performance would decrease dramatically (usability side of the story).
in such a case i recommend to sort the movie forum by title:
1. just click "thread" in the table-header of the classic movie forum
2. then find the location of the movie thread with the "go to page" dropdown:
here you can enter the page number you think is close to the location of the first letter of your movie. as long as you are inside that subforum, the sorting by thread title stays active so it's quite easy to check if the movie you're looking for is available (sorting of threads works in all subforums, so of course you can use this hint to search model threads, too)
if your search fails, you can also try to check for movie scenes in those threads we have of the casted models.