6. Captain America: The First Avenger
As tricky as Thor admittedly can be, Steve Rogers’s Captain America certainly has its hurdles as well. Namely being the Superman complex – how does a film make a natural do-gooder, boy scout interesting? The answer is to show him pre-serum and then also show him making the ultimate sacrifice at the end. Aided by having the most touching, longing romance to date, no matter how fleeting, between Peggy and Steve (helped immensely by Hayley Atwell’s terrifically layered performance), The First Avenger isn’t a perfect Captain America movie, but it sets the stage as to why we’re going to become so invested in Steve Rogers and his story.