Centering "The Rehearsal" is the ongoing punchline that every elaborate, unnecessary vision Nathan Fielder places before us is the result of HBO allegedly giving the actor carte blanche to do whatever he wants. In its first season, under the guise of helping a teacher come clean to his bar trivia team about a lie, Nathan constructs a detailed replica of the bar where he and his subject endlessly role-play as many possible turns an upcoming awkward conversation could take. In the case of a woman deciding whether to have kids, he rents a house in rural Oregon and hires an...