The Region 4 version of this disc misses out on;
The Region 1 version of this disc misses out on; There is no mention of aliasing on the R1 reviews I read, but usually the R1 version will suffer more severely from this artefact than its R4 counterpart because of the lower number of horizontal lines and because of the 3:2 pull-down artefacts that are associated with the NTSC format. If you want the maximum number of extras, then the R1 disc is the clear winner here, but for me personally, I prefer PAL pretty much any day of the week, even if that means sacrificing a few extras.
- Commentary by Toby & Noah Emmerich
- Isolated music score with commentary by composer Michael Kamen
- Optional subtitle track that appears throughout the movie offering scientific, historical, and trivial facts involved in the story
- Ad for a DVD-ROM game called Ground Control that has nothing to do with the movie.