I was browsing through the net and saw the poster of The Avengers. This will be released sometime May 2012 and distributed by Walt Disney Pictures.
Here are some movie clips.
Chris Evans and Robert Downey, Jr. star as Captain America and Tony Stark/Iron Man in Marvel’s The Avengers
Chris Evans stars as Captain America
Tom Hiddleston stars as Loki in Marvel’s The Avengers
Samuel L. Jackson stars as Nick Fury in Marvel’s The Avengers
Scarlett Johansson and Jeremy Renner star as Black Widow and Hawkeye in Marvel’s The Avengers
Scarlett Johansson stars as Black Widow
Source : Marvel Comics