It's been over a year now since Siri launched alongside the iPhone 4S in October of 2011. When I first saw Siri, it seemed to have enormous potential as: 1) A natural language interface that may one day do to multitouch and graphics was they did to the command line; 2) thanks to that interface, a way for Apple to intermediate and broker search away from Google and towards parter content; and 3) by virtue of that intermediation and brokerage, a gateway into customer insight analytics.
On the client side, I've enjoyed the type of results Siri delivers enough, both in terms of content and presentation, to wish Apple would: 1) hook it into Spotlight so I could still use it when talking would be impossible or inappropriate, or the natural language parser wasn't available; and 2) fix it so the natural language parser wasn't so frequently unavailable. (Purple-dot-purple-dot-purple-dot-nothing is the mouse only randomly getting food.)
Since then, Apple has brokered deals for sports, restaurant, and movie knowledge bases in Siri, including the ability to start table reservations and, soon, movie ticket purchases right from within the service. However, also since then, Google has launched their competing Google Now service. And Google knows services the way Apple knows hardware and software. It offers on-device voice parsing, Google's industry-leading backend infrastructure, and goes a step beyond Siri by attempting to predictively provide information and answer questions before you even ask them.
Now, Apple has started hiring people away from Amazon to help with the service and, in the wake of a management re-ogranization, Siri has been given to Apple's "fixer", senior vice-president Eddy Cue to help set, or reset, its course going forward.