Director Joss Whedon Staring Scarlett Johansson, Aaron Taylor-Johnson, Robert Downey Jr., Chris Hemsworth, James Spader, Chris Evans, Elizabeth Olsen, Cobie Smulders, Jeremy Renner, Mark Ruffalo & Samuel L. Jackson Rated M Score 4/6 When Tony Stark tries to jump-start a dormant peacekeeping program, things go awry and it is up to the Avengers to stop…