Andy Serkis (Gollum from the Lord of the Rings Trilogy) is playing King Kong as well as a regular acting part in the Peter Jackson remake of the 30's classic. He's joining Jack Black (of Tenacious-D and School of Rock fame), Naomi Watts and Adrien Brody on the casting line-up.
If you read the "Gollum Actor 'To Play' King Kong" story (BBC On-Line; Friday 11th June 2004) please ignore them called Gollum a 'warped hobbit'. Grrr....