Jott

Have you ever wanted to send a memo, or a short message to another phone, but your too busy? (like while driving)
Jott converts your voice messages into emails, and text messages. All you need is your cell phone, and your account at Jott. You simply register the number with Jott, and from then on all you have to do is call and leave yourself a message. It’s transcribed, partially by computer and partially by humans, and sent to wherever you designate: an email address, a SMS, someone else’s email or phone.

http://jott.com