Q. Do you have a list of available movies? Or do you have to search individually and know what you are looking for?

You can use Library Search to find movies (even if you don't know the title) by searching with keywords.

1. Go to Advanced Search
2. Select Library Catalog
3. Type your search terms
4. Change Material Type to Video/Film
5. Click the Search button  

This an example search for documentaries:

After searching, you can refine your results on the left by selecting a library, choosing a language, and more.  Sort the results by date to see the newest movies first. 

To find streaming video, scroll down to "Refine my results" and select the "Available Online" filter under "Availability."