Captain America: The Winter Soldier opens in the nationwide wide and if your theater was anything mine, every fifth person or so in the row was a hardcore comic geek jumping for joy at certain scenes. If you've seen the movie, AND ONLY IF YOU'VE SEEN THE MOVIE, here's a lowdown on the film. THERE BE SPOILERS HERE.
I'm not kidding, do not read this post unless you have actually seen the movie. Even if you don't plan on watching this film, DO NOT READ THIS POST. Seriously, if you put the effort into clicking a post on this film, you have more than enough interest to watch the film. Trust me, it's worth it.
To repeat: There are spoilers here, not just for plot twists or conversations, but for (mostly surprise) references to comics or other Marvel things in the film. My similar post on Thor: The Dark World could be read largely spoiler free (until the bottom), that is not the case here. For insight on Falcon, Rumlow and Batroc, see the post about Captain America: The Winter Soldier's first 10 minutes. (UPDATE: The three characters are now included at the bottom of this post. UPDATE 2: more stuff! UPDATE 3: questions addressed!)