George Clooney took shots at other famous actors like Russell Crowe and Leonardo DiCaprio in a no-holds-barred interview with Esquire magazine.

The two men began feuding after Crowe accused Clooney of being "a sellout" during an interview with GQ.

A war of words ensued and it was then reported Crowe apologized reportedly after realizing the two might bump into each other during an awards season. The 52-year-old Gravity star poked fun at Crowe's effort to mend their differences.

"The truth is that [Crowe] did send me a book of poems to apologise for insulting the sh*t out of me, which he did. He picked a fight with me. He started it for no reason at all. He put out this thing saying, 'George Clooney, Harrison Ford, and Robert De Niro are sellouts," George revealed to Esquire magazine.

In retaliation, George made fun at Crowe's band 30 Odd Foot of Grunts, which didn't go well with the actor.

"That's when he really went off on me. 'Who the f**k does this guy think he is? He's a Frank Sinatra wannabe.' He really went after me," he said.

"But then I had a year. Then I had Syriana and Good Night, and Good Luck, and he was gonna see me at the Golden Globes 'cause he was nominated for Cinderella Man. So he sends me a disc of his music and a thing of his poetry. I think he said, 'I was all misquoted,' and I was like, 'Yeah, yeah. Whatever.'"

He also gave his opinion on DiCaprio after they  played a game of basketball, which Leonardo's friends almost ruined.

"And the discrepancy between their game and how they talked about their game made me think of how important it is to have someone in your life to tell you what's what," George explained. "I'm not sure if Leo has someone like that."