2. The Winter Soldier Is A Formidable Foe
Marvel has been a bit hit-and-miss with their villains over the years. For every Loki, there's an Ivan Vanko, and even some of their more famous foes, like The Mandarin, have been highly mishandled. The Winter Soldier, however, looks to be quite the foil for Cap, at least from the brief glimpses we've seen of him so far.
Though the shot of him taking out Nick Fury's car was incredibly badass, the money-shot of the trailer was the final image of him turning around to catch Cap's spinning shield mid-toss. Add the fact that the Winter Soldier's past is intricately woven into Steve's, and we're bound to get a thrilling battle between the two of them throughout the course of the movie.