Serkis, 40, will play the title character in the upcoming movie filmed in New Zealand by "Rings' director Peter Jackson, Britain's Sun reported Tuesday.
"He's extraordinary, the amount of research he's done. He brought back incredible tapes of all that gorilla behavior that we need to get very familiar with," Watts said.
Astronomers offer more expansive view of universe
Attkisson leaves CBS News, reportedly over network's 'liberal bias'