Now available in Canada, Dragon Dictation from Nuance is on the iPhone.
The software itself works fairly well. The accuracy is pretty good with speech that is clear and slow. The fact that this tool is now available for a handheld device is fantastic. And the price is right - free.
http://www.nuance.com/
Visit the Learning Classroom Webpage
http://www.tvdsb.ca/programs.cfm?subpage=82973