I'm hesitant to post this since the quality is so meh, but never let it be said that you guys missed out! A few Expo attendees apparently hand-cam'd the trailer for Gatchaman that Imagi was showing at their booth, and here's a decently-watchable copy.
I haven't entirely decided what I think about it-- in terms of content it's rather generic (blah blah blah, Earth faces a great danger, here's the guy who's the only one who can save it, etc). The animation itself flows nicely, clean and smooth, but it's a slightly more realistic look to the CG (as opposed to Imagi's more cartoony style for Astro Boy), which means it can look mildly awkward.
What do you guys think?