I would guess that there are always only a few movies that really grip you and will not let go. I am still recovering from seeing The Piano, however many years ago that was.

Interesting that Holly Hunter starred in The Piano and also provided the voice for The Incredibles. I preferred her in the Piano - as she did not speak in that one. Did she get an Oscar BECAUSE she did not speak in that one?

Perhaps it is films like The Piano that pose many questions but do answer them all, that you remember. The ones with all the incredible special effects tend to provide all the answers and don't leave very much for your imagination to work on?