The honor usually goes to movie stars.
"I know this is all about me and not about these three guys," Weintraub said.
Damon said: "It should be noted this isn't the first time somebody tried to put Jerry Weintraub's feet in cement."
Clooney, of course, chimed in with a joke of his own.
The ceremony came hours before the Hollywood premiere of "Ocean's Thirteen," which opens Friday.
Screaming fans lined the sidewalk to cheer the stars and the lucky ones got autographs. The crowd roared with approval as the stars left their mark alongside the Hollywood legends immortalized on the sidewalk.
"The first thing you do when you come to Hollywood is you come out and stick your hands and feet in somebody else's footsteps, so it's a nice thing," Clooney said. "It's an honor."
It was also an opportunity for Clooney to joke at Pitt's expense.
"He has very small feet," he added. "I don't want that out, you know how those rumors get started."