When you are on a particular actor / actress page, is it possible so see which movies you have seen with him / her ? I can't seem to find it immediately so I think it's not possible (yet ?). Regards from Belgium.
This feature already exists. Please look on the right hand side of any /name/ page on the IMDb desktop site; towards the bottom you will see a box labelled "How Much Have You Seen?" where you can click on the link to see the data.