I used to use Jott for recording voice memos when out and about, driving, etc. The Voice Memo app released with iPhone OS 3.0 is pretty slick, but I don’t use it because it’s too easy to forget to go back into the app and listen to the recordings (and emailing them can’t be automated).
This Google Voice setup is really nice since it will email you the transcribed recording and, if you use GMail, you can enable the Google Voice player (in Labs) to listen to them right there - useful if the transcribing is frakked.
I just followed these steps. The final step didn’t make sense (the GV interface must have changed), so below is a screenshot of what I have. Afterwards, just create a quickly accessible entry to your GV number on your phone and you’re good to go.
