I use Vlingo... AWESOME personal assistant app. I also used to use Dragon on iPhone, and when I had it it was free... don't know if you guys are talking about a different app, or if they started charging for it?
I also have to give a +1 on the Virtual DJ app. I wish there was more functionality to it, like being able to scroll through and use effects... but for $10, its a VERY great MIDI addition.
In the near future I plan on getting another MIDI app since the VDJ one worked so well, I want to see if there is an app that allows assignable buttons and sliders and whatnot.
I also plan on getting FL Studio Mobile or whatever it is called... I hate when I have a great idea for a song and I am not at home, and then I either forget what song I wanted to work on, or forget to do anything entirely. If anyone else is interested in getting it, or seeing how it works, I could post a review of it once I get it.