Unicorns – Live stream your iPhone screen (unicorns.io)

If you have to plug it into your computer for it to work it's not a unicorn it's a 1 trick pony.

The demo portion is quite impressive. Not for the software of streaming your phone, but for the fact that they implemented a full-on recording and playback system for live streams with chat, which can even interact in limited ways with input of users viewing a recording.