Don Cheadle

Don Cheadle has been named a goodwill ambassador for the United Nations, according to The Associated Press.

See photos of Don Cheadle

As an environment program ambassador, the 45-year-old Cheadle, who earned an Oscar nomination for his performance in 2004's Hotel Rwanda about the 1994 genocide, will fight climate change, promote environment conservation and raise green awareness.

Cheadle's first duty, though: Naming a baby gorilla Zoya. The name was voted on by users as part of the U.N. environmental awareness program.