District 9
VFX studio Image Engine was responsible for the unearthly CGI in the gritty alien thriller District 9, but it wasn't an easy feat. One of the most difficult shots from the field was dubbed "the 1,000,000-alien shot," in which a brief shot depicted the interior of the alien mothership filled with hundreds of aliens. "That was hard mostly because we didn't have a lot of time to do it, so we had to scramble to figure out a way to get all the aliens together in that shot and make it work," said visual effects supervisor Dan Kaufman.
I Am Legend
Will Smith wasn't really fighting off zombie dogs in I Am Legend—instead, a man in a green suit was coming at him with a dog puppet. Smith shared this hilarious behind-the-scenes look at the 2007 film on Instagram. "I was like, 'My dude, I can feel your little hush puppies on my thigh," Smith said of the scene. "You're going to need to settle down with your core thrusting."