Rebecca Rosen investigates.

[S]he'll book your appointments, check the weather for you, remind you to pick up something at the store. These are classic personal-secretary tasks, and somewhere around 97 percent of all secretaries in America are of the female persuasion. She can be a little saucy, but just a little. (Interestingly, Siri is not a lady all around the world. Her British self is a man; her Australian self is a woman. Feel free to float your own theories about that...

Is the British version really a man? It may have something to do with Jeeves. They all have butlers over there.