Thor and Captain America Do Battle in New Avengers Clip

Opening in 3D, 2D and IMAX 3D theaters on May 4, the Joss Whedon action adventure also stars Robert Downey Jr., Mark Ruffalo, Scarlett Johansson, Jeremy Renner, Tom Hiddleston, Stellan Skarsgård, Cobie Smulders and Samuel L. Jackson. In the film, when an unexpected enemy emerges that threatens global safety and security, Nick Fury, Director of the international peacekeeping agency known as SHIELD, finds himself in need of a team to pull the world back from the brink of disaster. Spanning the globe, a daring recruitment effort begins.e