The New York Times liked it:
It’s not that Herman has been playing it safe so much as he’s resigned to being typecast, settling for roles that require a high-pitched voice and “candy cane spandex.” His mother’s dying wish for him to take his career more seriously sends Herman and a ragtag crew, including the delightful Kay Cannon, a writer (“30 Rock” and “Pitch Perfect”) in her first lead film role, on a wacky adventure around Manhattan in hopes of auditioning for Martin Scorsese, who’s remaking “The Wizard of Oz.” . . .The Village Voice was not so taken:
At its best, the movie has a sort of sitcom feel, with swift pacing and delivery, and the strong ensemble cast has a natural rapport.
Instead of “settling to be a punchline to some bad joke,” Herman fights to audition for a much bigger role: the Tin Man. But neither he nor the film gives anyone else the respect that he demands. Herman rolls his eyes when flamboyantly gay brother Gregg (Jeff Hiller) comes out of the closet. And to his love interest Miller (Kay Cannon) he mocks heavily accented Latino friend Juan (Emmanuel Maldonado), warning her not to make fun of Juan’s pronunciation of “JewTube.”Here’s the trailer so you can sample it yourself.
Herman and Miller’s relationship isn't much more sensitive. . . . Herman eventually stops being so childishly possessive. But the fact that he spends much of the film demanding better treatment from others while preemptively condemning them says a lot about The Little Tin Man’s everyone-but-me progressivism.