George Clooney turns 60: a look back (36 images)

Cast member George Clooney (L), and then-girlfriend Celine Balitran arrive for the premiere of "The Peacemaker" in Los Angeles, on September 24, 1997. Clooney rose to fame for his role in the TV series, "ER," that ran from 1994 to 2009. Photo by Jim Ruymen/UPI

Clooney arrives for the Los Angeles Spirit of Liberty celebration by the People for the American Way Foundation where he received the Spirit of Liberty award for his direction of the film "Good Night and Good Luck" in Los Angeles, on September 26, 2005. Following the praise he received for the film, Clooney said it wouldn't mean he'd only do serious movies in the future. Photo by Phil McCarten/UPI

Clooney won Best Supporting Actor for his role in "Syriana," at the Academy Awards in Los Angeles, on March 5, 2006. Photo by Jim Ruymen/UPI

Clooney ponders a question from the United Nations media after attending a meeting with the United Nations Security Council members on the subject of Dafur, Sudan, in New York City, on September 14, 2006. The meeting was called for by the U.S. Mission to the U.N. and the Elie Wiesel Foundation. Photo by Ezio Petersen/UPI