Actually, one of the best works I've ever seen.
Seriously, this was truly awesome.
The graphics, what to say about them? The backgrounds were very artistic, well drawn, simply excellent. The animation was smooth and cool, the file design was excellent... Masterful. I'm impressed with the first background! Also, the flashing background was just as the little animation in the Portal. Great idea, and perfectly performed.
Sound? Perfectly synced, and well chosen. Great.
And overall, NG related movies always get me in the mood. This was simply masterful, you should be very, very proud of it.
However, it could have been longer... I find it too short...Maybe an extended version, or something like that, would make this a place between the immortal ones.
Simply excellent, keep the great work up! :D