Spoiler free section- In the very last shot of the film I missed something my wife told me seconds later: Keep your eyes on the top half of the frame as he pans out from the ferris wheel, not the bottom.
I thought it was a good movie and worth the $5.50 I paid. Me and wife snuck into I Am Legend after and it was not as good.
SPOILER BELOW:
A kind of alien seed pod crashes into the water from the sky off Coney Island. I was watching the friggen carnival and not the water or sky and missed it, but if you consider the pod coming from space, and the fact that it was apparently undetected, that split second of video would be what makes the entire thing invaluable to the Department of Defense keeping it, which is kinda neat.