Don't Think Twice is a tremendously satisfying film about a very specific world, and anybody familiar with the gruelling hustle of comics, writers and improvisers vying for any measure of success in those fields will recognize many of the characters and small details that Mike Birbiglia has written into this film. Outsiders, though, don't have to worry that this is all "inside baseball" for comedy nerds because the emotions and relationships that propel this film are pretty universal. Driven by a talented ensemble and featuring as many poignant moments as genuine laugh lines, this humble film may stick with you a lot longer than you'd expect.