ITunes has unleashed another clip for Marvel's upcoming superhero adventure, Marvel's The Avengers. This clip shows an epic battle between Iron Man (Robert Downey Jr.) and Thor (Chris Hemsworth). Check out the action packed clip below!

The Super Hero team-up of a lifetime, featuring iconic Marvel Super Heroes Iron Man, The Incredible Hulk, Thor, Captain America, Hawkeye and Black Widow. When an unexpected enemy emerges that threatens global safety and security, Nick Fury, Director of the international peacekeeping agency known as S.H.I.E.L.D., 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.