Just watched this video on YouTube for Nozbe on the iPhone, iNozbe.
Now, I haven't yet played with Nozbe, as I tend to be a bit of an offline app love for GTD and don't really know how the online version would be for myself.
The app seems pretty cool on the iPhone. The fact you have to log in etc.. and the general slow time to get things entered would see me grabbing for my Moleskine anyday!
Anyway, check out the video, and I promise one day to fully review Nozbe.
I have used Nozbe for a couple weeks thus far and love it. I was just about to give my iPhone to my wife, then found iNozbe. You only have to log in once, then from that point it just works.