EDIT**: First look at Scarlett Johannson in "Iron Man 2", now in high quality AND new story/casting info

Source: Slashfilm.com

Confirmed bits of info:

• Sam Rockwell plays a fast-talking weapons manufacturer named Justin Hammer, “who fancies himself the next Tony Stark”
• Mickey Rourke plays Russian criminal Vanko, who creates his own battle-suit while incarcerated in a Soviet prison.
• Whiplash’s suit “shoots devastating, whip-like beams.”
• Hammer and Whiplash join forces to take on Stark/Iron Man,
• Rourke insisted that his character have a cockatoo, which he talks to and gets drunk with while he’s making the suit.
• Scarlett Johansson plays Russian superspy (possibly undercover?) Natasha Romanoff (aka the Black Widow), who is hirede as Stark’s assistant which inevitably sparks romantic tension between Stark and former assistant Pepper Potts (Gwyneth Paltrow), who’s been promoted to CEO of Stark Industries.