The Rehearsal is a docu-comedy television series created, written, directed by and starring Nathan Fielder. The show premiered on HBO in July 2022 and quickly received critical acclaim. In August of the same year, HBO announced that the series would be renewed for a second season.

The show features Nathan Fielder helping people prepare for difficult conversations or events by creating elaborate sets and hiring actors to recreate the situations. Fielder and the actors then practice different dialogue trees with the clients dozens of times. Sometimes, the information used to train the actors and build the sets is collected without the clients' knowledge. The situations range from trivial to complex, but all aim to help the clients rehearse for real-life situations.

The show's premise was inspired by Fielder's earlier series, Nathan for You, where he would role-play scenarios to predict how people would react to his often ridiculous suggestions. The Rehearsal takes this idea further by creating entire sets and hiring actors to help clients practice difficult conversations. The humor in the show often comes from the extravagance of the sets and the absurdity of the situations.

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