'Iron Man' Downey Rings NYSE Opening Bell

Tuesday, 30 Apr 2013 | 9:34 AM ET

Robert Downey Jr. rings Tuesday's opening bell to celebrate the release of "Iron Man 3," with the "Squawk on the Street" crew. CNBC''s Bob Pisani speaks with Robert Downey Jr. about the success of the film, and what movie franchises has done for the comic industry.