This is pretty exciting: Mozilla Labs is providing a sneak peek this week at Project Joey, a "Firefox add-on and a Java midlet that allow you to pass data from Firefox to your cell phone." The video above tells all - very neat stuff.
This leaves us wondering whether Mozilla could end up with a major play in the mobile space, in addition to the browser market: they certainly have the momentum among a certain class of geek, and tying this to Firefox seems like the right way to go.