The actor Sam worthington, star of the new film by James Cameron called "Avatar", will participate in "Terminator 4«Recommended by Cameron himself.
Worthington would play Marcus, who appears in the film when Skynet has destroyed much of humanity with a nuclear holocaust, while a group of survivors led by John Connor (the role of Christian Bale) resist and fight the machines.
"Terminator 4," directed by McG, will be released next year, and the protagonist is still unknown.