Voice Actions comparable to Android

Is there a way to get voice actions for iphone that are comparable to that on the android OS?

ie speaking 'navigate to pizza hut' and having it pull up turn by turn directions to pizza hut OR 'send text to bob, hi bob how are you'.. etc.

Obviously this would involve the voice commands application to be pervasive and integrated with multiple apps which I posted in the iphone hacks forum..I assume if it exists it is a cydia app of some kind?

Thanks!

 

Bump..