Transformers: Dark of the Moon may not have been our huckleberry, but the film's concept artists did an exemplary job drafting legion upon legion of stab-happy robots. For your perusal, here's some of film's finest artwork.
I'm somewhat disappointed there aren't dozens of storyboards depicting Shia LaBeouf's perpetually mouth-agape expression. That look can't be refined by mere acting alone — you need diagrams and portraiture to perfect such a dumbfounded visage. Oh well. [Via Twitch, CBM, Concept Art World, TFW2005, and Siebertron]