official trailer for Avengers Age of Ultron
by Joss Whedon with Hayley Atwell Scarlett Johansson Chris Hemsworth Aaron Taylor-Johnson Chris Evans Robert Downey Jr. Idris Elba Tom Hiddleston Jeremy Renner Cobie Smulders Elizabeth Olsen Mark Ruffalo James Spader Andy Serkis Samuel L. Jackson Paul Bettany Stan Lee