The Trainer

John McEnroe

Paris Hilton

Kirk Myers

Maimonides / The Backwards Guru

Julian Schnabel

Evan Ross

Jason Momoa

Don Lemon

Lenny Kravitz

Sandra Seacat

Kevin Eubanks

Juicy J

Bee Luciani

Isaac Rabinowitz

Jack's Mother

Timothée

Gus Van Sant

Snoop Dogg

Charlotte McKinney

Bob Colacello

Bianca Slater

Sharon Stone

Zar Amir Ebrahimi

Jack Flex

Elektra

Luke

Will

Ai Weiwei

Hot Baker (uncredited)

Will's Mom

Nat Faxon

(uncredited)

Gayle King

Gavin Rossdale

Mr. Chow

Bono

Lauren Sánchez

Carla Bruni

Trainer (uncredited)

Kevin Love

Brian Tyree Henry

Roberta 'Bob' Campbell

Finneas O'Connell

Brad Pitt

Chris Rock