Captain America: The Winter Soldier is a sequel to both Captain America: The First Avenger and The Avengers, and a quasi tie-in to ABC's ongoing Agents of S.H.I.E.L.D television series. It also riffs on Ed Brubaker's classic comic book arc of the same name and that it manages to weave all those threads together into a pretty entertaining movie is a testament to just how well Marvel/Disney has planned their cinematic universe. If you haven't watched the previous films and shows, however, you can still catch up on all of them via iTunes and a fair chunk via Netflix as well (depending on what country you live in, because, ugh.)
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