Jeremy Renner was on The Tonight Show on April 28th, 2015, to promote
Avengers: Age of Ultron. Not only did he offer a hilarious Hawkeye-sketch, singing about his character's yet unknown powers, but on a more serious note, we also got new footage from the most anticipated sequel, with one or two lines already familiar from the trailers. The clip shows a key moment between Hawkeye and Scarlet Witch which takes place in the final battle.
Obviously, spoilers following.
Having seen the movie some time ago already, I just have to add that this is just one of the many great scenes Hawkeye has in this movie, and it's also probably the most impotant one for him. Not only does it show how significant the character really is for the team, it also lets us see a glimpse of the humor that comic fans appreciate so much about Clint Barton.