Downey Jr: Iron Man 2 took effort
Robert Downey Jr has admitted it took extra effort to make sure Iron Man 2 was up to scratch.
The Oscar-winning actor said the cast and crew of the movie - due out this month - wanted to ensure the sequel was as good as, or better than, the first.
"I just thought it was going to be easier and more fun, but I thought, you know what? Maybe we've got to really roll up our sleeves," he said.
"We had to really, really, really redouble our efforts to kind of make it something that seemed it would stand next to the first one."
:: Iron Man 2 is due in cinemas on April 30.