5. Iron Man 2 (2010)
After Tony Stark’s identity is revealed, Ivan Vanco creates a mini arc reactor similar to the one Stark has. The reactor becomes a success for its peaceful intentions, but Tony Stark gets accused by the government of being in possession of specialized weapons.
As with many Marvel movies, the key feature is in the scenes after the credits. Phil Coulson, a S.H.I.E.L.D. agent, arrives in New Mexico where authorities appear to have found a crater. He contacts Fury to inform him about his new finding: Thor’s hammer.