I just watched a video on Stuff.com where they were sampling different commands for Siri and I noticed that when the girl with the English accent spoke to Siri, instead of responding with the robotic ladies voice we have all heard, it was a robotic MAN's voice - kinda sounded like Simon Cowell minus the honest insults. I know that you can set the language to three different versions of English (US, England, and Austrailian I think) so I wonder if each version has it's own Siri voice. Man, I sure hope the Austrailian one sounds like Steve Irwin!
Video of Siri working perfectly for users with a variety of accents - TUAW - The Unofficial Apple Weblog
Video of Siri working perfectly for users with a variety of accents - TUAW - The Unofficial Apple Weblog