Wow. I give it a Bad *** rating, and I don't hand those out everday (ok, I just thought of that, but it still rates it). Loved the gray->color transition at the beginning - in my head I thought "he should do that", then you did!
Loved the whole theme, great cinematic composition. I'm not a fan of the super-epic sound on many videos, but it fit in yours I think.
One minor flaw: the jpeg compression artifacts were pretty bad in certain places. Along edges throughout, especially when chaotic grass and such were present, but that's not really uncommon. But also in odd places. For example at 1:30, the center of the ship looked like it contained a portal to another dimension.