Wow, the vid is of jaw-dropping quality, probably one of the best gaming fan vids I've ever seen. Like RayDyn, though, I'm wary of giving Bioware that much credit. It's not only too genius, but as HM pointed out, it's almost too cruel, because it suggests that the real ending had been planned for later all along, and probably for a price tag.
But I have to wonder - isn't at least some of the upcoming DLC confirmed to be post-ending? How would that even work?
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Yoblazer: http://oi53.tinypic.com/2hd0dh1.jpg
Watch and you'll see... someday I'll be... part of your world!