People Magazine

This photo was in the Star Tracks section of People Magazine (3-26-01 issue)
It said:
Castmates in Ocean's 11- from left, Casey Affleck, George Clooney, Matt Damon, Brad Pitt and Scott Caan (son of James)- came ashore for ShoWest, the annual powwow of theater owners in Las Vegas. "We all got together because our director Steven Soderbergh quite honestly needs a hit," said Clooney of the double Oscar nominee.

source: Clooney Fan Listbot -  http://www.geocities.com/~clooneyfan/