TV series spun off from the Marvel movies, features agent Coulson and his team of agents. It begins after the events of The Avengers, and the show has intertwined with the movies since then, including Thor 2, The Winter Soldier and Age of Ultron.
The first few episodes are pretty bland, but it picks up the pace and hasn't slowed down since. Season 1 is on Netflix. When I discovered it, I blew through the show in a week during downtime at work.
http://www.youtube.com/watch?v=T3T-evQZiQo