If you ever want to see what movies you've watched on Amazon; it's very straightforward, if not a bit hidden. Click Prime Video from the Homepage, then the Settings icon and then click Settings, then Activity and finally View Watch History. However, if you look at your Netflix activity you will be given the most complete review ever: Who browsed what titles, what did they rent when and what device did they use. Much of it has to be exported into Excel files. To jump down the rabbit hole: Go to your Netflix Account, click Download your personal information. They actually email you a temporary link that gives you access to all these files.