Impressive. I have the R4, NTSC edition released in South America, that´s a two-disc set full of extras.

Disc one has two commentary tracks and a featurette on the making of Alien Vs Predator, Gosh knows why.

Disc two has all the deleted scenes with commentary, a 60+ minute documentary on the making of, "Audio Anatomy", lots of pre-vis stuff and, more importantly, a 60+ minute docu on the "Science Behind The Day After Tomorrow".

This docu basically blames the USA for global warming, so I guess that´s the reason it was scraped from the R1 release.

Oh well.