well Nokia users have something batter than siri.
it is Vlingo, you don't ask vlingo for something, you tell it.
whether you want to call a friend, send a message to someone, send an email, update your facebook status, search (bing or google) or even open an app... vlingo does just that (doesn't ask questions or make any suggestions).
check out the demo of vlingo:
download vlingo from nokia store here