‘Tonight Show’ Writers’ Room Shake-Up: Mason Steinberg Exits as AD Miles Returns

Miles previously served as head writer on Jimmy Fallon’s late night programming from 2009–2017

Jimmy Fallon
Jimmy Fallon attends the FYC Event For NBC's "The Tonight Show Starring Jimmy Fallon" (Photo by Frazer Harrison/Getty Images)

“The Tonight Show Starring Jimmy Fallon” is making some changes to its writers’ room.

Head writer Mason Steinberg is stepping down from the role, which he’s held since 2022, while former head writer A.D. Miles will return to the post, TheWrap has learned.

Miles previously served as head writer on Jimmy Fallon’s late night programming between “Late Night” and “The Tonight Show” on NBC from 2009–2017. The move comes after Chris Miller became “The Tonight Show” showrunner in 2022. He replaced Jamie Granet-Bederman at the time.

In his tenure working with the former “Saturday Night Live” star-turned-late night host, Miles became known in part for his work in front of the camera, appearing in popular “Ew!” sketches as Fallon’s stepfather Gary alongside A-list guests like Taylor Swift, Michelle Obama, Drew Barrymore and Emma Stone.

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