Voice control has been around for years and years now. Siri was the first voice control to actually work well. Actually, I bet it was just the first voice control application to be marketed well. The voice control option for my Android phone is spectacular. I can read paragraphs to that thing and it barely misses a word.
Siri is much more user friendly than my phone's voice control. For one, I call mine Voice Control and you call yours by a personified name, Siri. How cool is it that there's little friend inside your pocket that can tell you almost anything you would like to know? I'll tell you, very cool.