You can always get movies data by querying some of the online APIs such as that offered by IMDB. However, to build a responsive and versatile movies application or website, you need your own full database of all the movies hosted on your own server and instantly accessible to your application layer.

Preferably, it is constantly updated so you don't have to update it once deployed.

This is by far the best films database we can find. It is well structured and completely normalized, with so many entity tables and relationship tables. All the data records are semantically inter-connected with each other.

Did I mention the 1.62 million images package that's 66 GB in size? A killer app is just around the corner.