Robert Downey Jr brought his own personal snacks to the set of The Avengers and hid them all over the laboratory set because he was constantly hungry and simply did not want to wait for the official catering breaks.

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Robert Downey Jr brought his own personal snacks to the set of The Avengers and hid them all over the laboratory set because he was constantly hungry and simply did not want to wait for the official catering breaks. The moments in the film where Tony Stark casually offers Bruce Banner some blueberries were completely improvised because the actor was literally just eating his hidden stash on camera and decided to share to stay in character. When you are the highest-paid actor in the entire Marvel cinematic universe, directors apparently just let you turn a multi-million dollar high-tech movie set into your own personal pantry while you rant about saving the planet from an alien invasion