The first time Mike Birbiglia wrote, directed and starred in a film (Sleepwalk With Me) he played a stand-up comic. This was not a huge stretch for him, as he is, himself, a stand-up comic.
His second film, Don't Think Twice, doesn't stray too far from that model. It's about an improvisational comedy troupe a lot like the one in which Birbiglia got his start. And if this seems like quite a bit of navel-gazing for one filmmaker, rest assured that Birbiglia's been keeping it funny.