In March 2009, Johansson signed on to play Natalia Romanova/Natasha Romanoff, aka "The Black Widow" in Iron Man 2 after Emily Blunt turned down the role. The film was released in May 2010.
Appearing at San Diego Comic-Con on July 26, 2009, Johansson joked about her audition for the film, saying it consisted of "a couple of deep knee bends and lunges", but Favreau credited her with performing her own stunts: "All the fighting and wire work is her own. She worked really hard and it shows on the screen." Iron Man 2 was a box office success and received mostly positive reviews from critics. In 2011, Johansson played the role of Kelly, a zookeeper in the family film We Bought a Zoo. The film gained mainly favorable reviews. Calvin Wilson of St. Louis Post-Dispatch wrote that Johansson "brings to Kelly just the right blend of spunkiness and hard-won maturity." Johansson reprises the role of Natasha Romanoff in The Avengers in 2012. The Avengers received positive reviews and was highly successful at the box office, becoming the third highest-grossing film both in the United States and worldwide.
-------------------------I am everywhere: TWITTER, FACEBOOK, HOWLIN’ WOLF: OLM and HBA [HORROR SITES]. Last visit MY T-SHIRTS STORE at NEATORAMA something always going on and it is one click away!