5) Hawkeye vs. The Vision
When Hawkeye heads to the New Avengers Facility to recruit Wanda to Team Cap, he meets some resistance in the form of The Vision. Despite having pretty much no chance against the powerful android, Clint gives it his all, and this is a fight which gives the Russos the opportunity to show off The Vision’s phasing abilities and the very neat effect which happens when he hardens his form to protect himself from attack (something which Hawkeye’s fist is still no doubt feeling the effects of).
This one wraps up in a really unexpected way as well, when the Scarlet Witch becomes involved and uses her connection to the Mind Stone to dispatch “Viz” in a surprisingly brutal fashion. Despite that, the movie later makes it clear that there’s still a chance of romance between these two.