For the one million people who watched the finale Sutton Foster and Bailey Buntain may forever be sitting on a bench, wondering if the boy Ms. Buntain’s character slept with will ever call her back.

That would be unfortunate, because “Bunheads,” beyond being a charming and funny show, has the great merit of being unlike anything else on television at the moment. It doesn’t fit into any of the typical prime-time genres, though it has affinities with teenage comedy and family drama. It could also be grouped, very loosely, with the music show “Glee” and the theater show “Smash,” except that “Bunheads” gets at what performance really means in its characters’ lives rather than using it as a kind of artificial sweetener to stimulate the fantasies of the audience.