Yahoo! Movies has debuted this first poster for Marvel Studios' Iron Man 2, which Paramount Pictures will release in theaters on May 7. The poster gives you a first official look at War Machine! Directed by Jon Favreau, the anticipated sequel stars Robert Downey Jr., Gwyneth Paltrow, Don Cheadle, Jon Favreau, Mickey Rourke, Sam Rockwell, Samuel L. Jackson, Scarlett Johansson, Garry Shandling, John Slattery, Kate Mara, Clark Gregg and Olivia Munn.