What's the most popular movie being downloaded?

My friend gave me his old wireless video glasses. They’re not so much glasses, but more like a pair of mini video screens in the form of a pair of glasses. Think TV that you wear on your face. These video glasses come with an SD card which I can insert in a slot in the glasses. The purpose of the SD card is to transfer movies from possibly a computer to the video glasses in order to be able to watch movies. I have not used the glasses yet. This will be my first time using them. So now I just need to download a movie and save it onto the SD card. So my question is, what’s the most popular movie people are downloading?

Legally? Most things stream.