Funnyman Mel Brooks replaced Robert Downey, Jr. as a guest on U.S. late-night show Jimmy Kimmel Live! at the last minute on Thursday (02May13) when the Iron Man 3 star's interview had to be rescheduled to next week (beg06May13). The actor/director insisted host Kimmel ask him the questions he had prepared for Downey, Jr. Quizzed about the most difficult part of making the Iron Man sequel, Brooks said, "The breathing... They put you in that goddamn tin can and it's hard. It's OK for half an hour... but then you're fighting to get some (air)." He also joked that "rust" was the worst thing about being in the suit.