There is a scene toward the beginning of the film, when Captain America has just been recruited by S.H.I.E.L.D. and is riding on a jet with Clark Gregg's Agent Coulson. The agent mentions that the Captain's suit has been redesigned since World War II and the hero evinces surprise. "Aren't the stars and stripes a bit . . . old-fashioned?" he asks.
It's a single line-reading in a very, very big movie, but it captures such a sense of longing in the character, defines him in such a powerful way and brings a heart to the center of the action that is indispensable. Kudos, of course, to Mr. Penn's and Mr. Whedon's script, but all the more so to Mr. Evans; capturing some poignancy in the midst of such a large-scale spectacle is not very easy.