They're some of the sexiest men on the planet, for certain. They're also some of the do-goodingest.

George Clooney, Brad Pitt and Matt Damon are directing their collective goodwill toward Myanmar, asking the country's political powers that be to allow foreign-aid workers into the cyclone-ravaged region and urging neighboring nations to send any help they can.

Not On Our Watch, the activist group of which the trio are founding fathers (along with Ocean's abettor Don Cheadle), has already donated $500,000 to the relief effort. The organization has now launched a campaign asking others to do the same, beginning with a full-page advertisement in the English-language Jakarta Post newspaper.

"Burma's neighbors have the power to help victims who remain desperately in need," the ad reads, according to Agence France-Presse. It is signed by political and social heavyweights, including Philippine President Corazon Aquino, East Timorese President Jose Ramos-Horta, former Czech Republic President Václav Havel, and Nobel Peace Prize laureates Archbishop Desmond Tutu and Iranian human rights activist Shirin Ebadi.

Cyclone Nargis hit Myanmar (formerly known as Burma) on May 2-3 and left 138,000 people dead or missing. The United Nations reports that 2.4 million are in need of aid.

The ruling junta has refused entry to most foreign-aid workers, a stance the Not On Our Watch team called out in their ad, claiming the military regime reneged on a promise to let them in.

"Despite this, foreign supply ships with emergency and lifesaving equipment have been turned away or gone home. International relief continues to be slowed...Burma's delta remains shattered, its people starving and in danger."