A good idea is taken to the well one too many times in this routine comedy by Luciano Salce. Paolo Villaggio is Arturo, the bank teller of the title, and Catherine Spaak is his put-upon wife Elena. Arturo's problem is that he does not have enough money to keep his head above water and so that is his wife's problem too. The maid no longer works because she has not been paid in living memory, and Elena is forced to scrub the floors. Then Arturo brings in his mistress to shore up their finances. After he fails in his objective (she moves in but cannot help that much), Elena brings in her lover to help out. After he arrives, his wife also moves in with her lover. At that point, who is sleeping with whom becomes a question of mathematical complexity.