The viewing activity for your account is available on the Netflix website. You can download the viewing activity for any profile as a CSV file to easily see which titles were watched and when.
To download your viewing activity:
Sign in to Netflix.com and choose the profile you'd like to download the viewing history for.
Scroll to the bottom of the My activity page and select Download all.
A dialog will appear noting that the CSV file should automatically download to your computer. If the file does not automatically download, you can select the Download viewing activity button to manually download the file. The file can opened using any spreadsheet software that supports the CSV file format. If you'd like to see the viewing history for a different profile on your account, simply repeat the steps above.