J.K. Simmons Milton Berle
Willem Dafoe David Tebet
Finn Wolfhard NBC Page
Matthew Rhys George Carlin
Dylan O'Brien Dan Aykroyd
Nicholas Braun Andy Kaufman / Jim Henson
Drew Scheid Bob Pook
Brad Garrett Borscht Belt Comedian
Catherine Curtin Joan Carbunkle
Rachel Sennott Rosie Shuster
Jason Reitman Director, Writer, Producer
Kaia Gerber Jacqueline Carlin
Ella Hunt Gilda Radner
Cory Michael Smith Chevy Chase
Lamorne Morris Garrett Morris
Tracy Letts Herb Sargent
Cooper Hoffman Dick Ebersol
John Papsidera Casting
Josh Brener Alan Zweibel
Gabriel LaBelle Lorne Michaels
Robert Wuhl Dave Wilson
Kim Matula Jane Curtin
Monique Ganderton Stunt Coordinator
Tommy Dewey Michael O'Donoghue
James Logan Stew Sorrentino
Jon Batiste Billy Preston, Original Music Composer
Andrew Barth Feldman Neil Levy
Paul Rust Paul Shaffer
Gil Kenan Writer, Producer
Taylor Gray Al Franken
Peter Rice Producer
Lee Gilmore Supervising Sound Editor
CC Ice Stunts
Mychael Bates Property Master
Billy Bryk Carl
Emily Fairn Laraine Newman
David V. Butler Supervising Sound Editor
Tracy Kilpatrick Local Casting
Jess Gonchor Production Design
Leander Suleiman Anne Beatts
Chris Newlin Music Editor
Shane Reid Editor
Cassidy Alexandra Kahler Stand In, Polaroid Rep
Michele Ziegler First Assistant Director
Rowan Joseph Jim Fox
Christian Wood Visual Effects Supervisor
Nathan Orloff Editor
Mathew Price Production Sound Mixer
Will Files Sound Re-Recording Mixer
Jacob Berger Loading Dock Security Guard
Eric Steelberg Director of Photography
Justin M. Davey Sound Effects Editor
Jimmy Ray Pickens Transportation Coordinator
Janine Rath-Thompson Hair Department Head
Steven A. Morrow Sound Mixer
Naomi McPherson Janis Ian
Matt Wood John Belushi
Jeff Witzke Johnny Carson (voice)
Colin Lutke Lighting Technician
Sophie Ashworth Makeup Artist
Rose Locke Extras Casting
Karri Farris Makeup Artist
Nicholas Podany Billy Crystal
Chris Terhune Sound Designer
Jef Holbrook Editor
Kevin Gentry Dolly Grip
Martin Garner Video Engineer
John Ross Stunts
Smokey Cloud Sound Editor
Megan Chambers On Set Dresser
Ellen Boscov Mrs. Kaufman
Matthew Moriarty Steadicam Operator