His ultimate goal is to create a utopian prison, wherein the prisoners believe they have attained complete freedom within their confines - a goal similar to that of the man he biopiced in the film Brubaker.
Steve replies to a joking jab at his age by Natasha note "Hey fellas, either one of you know where the Smithsonian is? I'm here to pick up a fossil." with a sarcastic "That's hilarious."
And the narrator of the Smithsonian's Captain America Exhibit is Gary Sinise, best known for playing Lt. Dan.
Late-Arrival Spoiler/It Was His Sled: Given that the identity of the Winter Soldier is so well known, marketing makes no attempt to hide it. The film isn't especially careful about concealing the Soldier's identity from the audience either (after he loses his goggles and mask he doesn't replace them). The primary emotional beats come not from his identity being revealed to us, but to Steve.
Robert Redford joining a superhero film is not the kind of thing one would generally expect from him. He also uncharacteristically plays the villain of the film. Heck, the directors have commented that, in an earlier age, the idea of Redford playing Captain America himself would not have been all that far-fetched.
Production Posse: Danny Pudi, who stars in the Russo brothers-directed Community, cameos as a SHIELD technician. Alison Brie was also in the mix to play Agent 13.
Promoted Fanboy: Anthony Mackie is a huge fan of the Falcon, and has gushed multiple times about how lucky he's been to get the role. He even expressed disappointment that his costume wasn't the character's classic red and white spandex.
It's also heartwarming that one of the things he was emphatic about when joining the project was that he was playing Marvel's first African-American superhero.
Anthony Mackie did the film so that his son and other African American children can see that there are superheroes who look like them.
Robert Redford said that the first thing that got him interested in the film was that his grandkids liked the movies a lot.
Stunt Casting: Batroc's moves are pretty convincing - and that's probably because he's George St. Pierre, one of the most respected names in MMA, three time welterweight champion of the UFC, and one of the top ranked fighters in the world, like ever.
Also the third time for Chris Evans and Anthony Mackie (previously appearing together in What's Your Number? and A Many Splintered Thing).
Audiences get their first look at Aaron Taylor-Johnson and Elizabeth Olsen as the MCU's Quicksilver and Scarlet Witch; they're the co-leads as husband and wife in Godzilla (2014), opening one month after Cap.