I have a new entry for future projects:
MINORITY REPORT
BD has a different color grading in comparison to DVD and HDTV - avsforum
also, look at this screenshot comparison: in the HDTV version, should those reflections on the computer screen be there, or they are only MPEG2 noise?
I have both DVD and BD, but didn't find (yet) the exact frame...
Does it worth a preservation?