Marvel Cinematic Universe: A Visual History
3. Iron Man 2 (2010)
The biggest mis-step in the MCU, Iron Man 2 spent a lot of time building towards the still-a-long-way-off Avengers rather than telling its own interesting story.
Introduces: Black Widow, Howard Stark
Post-Credits Scene: It's shown where Phil Coulson disappeared to half-way through the movie - he's gone to New Mexico, where Thor's hammer has appeared.