Captain America: The Winter Soldier

There's a moment in Captain America: The Winter Soldier in which Nick Fury (Samuel L Jackson) has to ask his boss, Alexander Pierce (Robert Redford) for a favour. Pierce agrees to the favour, but only if Fury arranges for Iron Man to visit Pierce's young niece on her birthday. It's a throwaway moment, designed for a chuckle and to remind us of the wider world of the Marvel Cinematic Universe,