Suggestions: You shouldn't restrict yourself to just two posts for each film. You should include more material that you find e.g artwork, interviews, clips, music etc to enrich it. Also using tags on your posts would make it easier for users to navigate and find what they're looking for.
I realized tumblr wasn't necessarily the most intuitive place to make a blog considering each photo, video, text must occupy it's own "post" - but I thought it would be the easiest for rapid updates. I will look into adding more content for each film. My intent is to be a sort of gateway drug for these films. I know the first thing most people look at is the trailer, poster, plot and then where/who it came from. If at that point someone isn't interested they typically never will be. I hope people will be enticed by a film they discover on the blog and then go on to do their own research to find out where they can see it or more about it.
I followed you as well, and I agree with Sotiris, I think you should continue your posts about the films, and no necessarily restrict yourself to 2 posts.