This'll settle it for you:
Photo: SPLASH NEWS
Clooney, 47, had hidden in his hotel on his arrival but popped out of his room to play basketball with friends.
The Ocean's 11 star is starring in Men Who Stare At Goats, a war film based on British writer Jon Ronson's satirical novel.
The book details a secret unit established in 1979 by the most gifted minds within the US Army.
Defying all known accepted military practice and the laws of physics, they believed a soldier could adopt the cloak of invisibility, pass cleanly through walls, and kills goats just by staring at them.
They were known as the First Earth Battalion, and it also details some of the stranger national secrets at the heart of US President George W Bush's War on Terror.
Clooney will play Lyn Cassady, who claims to be a former member of the unit who was reactivated in the wake of September 11, with Ewan McGregor playing a reporter who stumbles upon the story.
Jeff Bridges is also set to play the founder of the programme with Kevin Spacey playing a former soldier now running a prison camp in Iraq.