Ever since Ant-Man was suggested as a possible addition to the Avengers line-up, the prospect of seeing him and Hawkeye (the cult heroes of the piece) team up to recapture a fan favourite moment was always high up the fanboy wishlist. And now here it is: Hawkeye firing the little guy on an arrow towards an opponent - in this case Iron Man - to make a mockery of his more traditional defences. It's a lovely call-back, and while it's something of a shame that they've shown it off in the trailer, it should get fanboys duly hyped, just as it does when it happens in cartoon or comic form...