Ok, we don’t really see a whole lot of Smaug in the The Hobbit: The Desolation of Smaug teaser, but it’s enough to see how friggin’ big he is. Of course the only frame of reference for the dragon’s size that we have is Bilbo standing next to his head, so technically Smaug is probably half as big as he appears.
Oh, and welcome back, Evangeline Lilly. It’s been too long! You’re a site for geeky eyes!
Enough chit chatting, why haven’t you clicked the video already?