Jon Hamm Is John Mulaney's Oh, Hello Understudy

Also available on the NBC app

Jon Hamm accepted a role as John Mulaney's understudy in the Broadway show Oh, Hello using a text message and emojis.

Appearing:Jimmy Fallon
Tags: The Tonight Show, Jimmy Fallon, Jon Hamm, John Mulaney, Oh, hello, understudy
S4 E204 minInterviewTalk and InterviewLatenight