Well, actually I have a 32 GB iPad and I can answer you because I know about it. Generally, I download my movies directly from a site and on average a movie takes between 300 MB and 500 MB, so about 1/2 GB. So if you have, like me, hundreds of photos (780) and a lot of apps (100), you can store about 20 movies. However, I don't know what Blu-ray and DivX mean and everything that goes with it, so I can’t say how much space that takes. :D