This article is from the rec.arts.movies.current-films FAQ, by Evelyn C. Leeper email@example.com with numerous contributions by others.
If nobody seems to be discussing what you want to talk about, post a
(polite) message opening the discussion. Don't just say, "Does anyone
want to talk about X" or "I really like X" however; try to have
something interesting to say about the topic to get discussion going.
Don't be angry or upset if no one responds. It may be that X is just a
personal taste of your own, or quite obscure. Or it may be that X was
discussed to death a few weeks ago, *just* before you came into the
group. (If this is the case, you'll probably know, though, because
some rude fool will probably flame you for "Bringing that up
*AGAIN*!!!" Ignore them.)