As far as the "feel" that actual film lends towards a...film, I am also sure that it is there and is something that is not really replicable, even with filters and grains and post-processing. The OT vs. the PT is a great example. No matter how good a job digital post-processing does, there is still only so much randomness most editing programs can create, so you end up with the same scratch in the same place periodically, the static grain starts to make a pattern, etc. - or - you end up with a movie that looks like a plastic playset (AOTC/ROTS).
As far as the "feel" that actual film lends towards a...film, I am also sure that it is there and is something that is not really replicable, even with filters and grains and post-processing. The OT vs. the PT is a great example. No matter how good a job digital post-processing does, there is still only so much randomness most editing programs can create, so you end up with the same scratch in the same place periodically, the static grain starts to make a pattern, etc. - or - you end up with a movie that looks like a plastic playset (AOTC/ROTS).