There's a new Oreilly book out on it called 'visualizing data'.<p>I'm only a few chapters in, but it's quite good so far. Covers the basics, a few good sized 'real' projects, and quite a bit on integrating it with java.
I did a couple of things with it; it's fun, like turtle graphics for grownups.<p>Don't rush out and buy the book right away; the website has plenty of content to get a feel for it: <a href="http://processing.org/learning/basics/index.html" rel="nofollow">http://processing.org/learning/basics/index.html</a>
I've only poked at it, but some pals are knee deep into it. They produce truly beautiful interactions with it.<p>Check out <a href="http://www.processingblogs.org/" rel="nofollow">http://www.processingblogs.org/</a>. It's a blogblender of active work on processing.
I've had great experiences using processing.
It's been sweet for prototyping multimedia stuff - live video processing, physical computing, data visualization, toys.
The libraries make it quick and painless to get graphics floating around.
I've been involved with the project off and on for a few years now. (I wrote the Interfascia GUI library for Processing.) As an interface designer, I find that it makes a great tool for rapid prototyping.
I don't have anything specific to share, but my past experiences were pretty good. It's definitely great for doing toy types of things (I wrote a 3d clock, for instance, that changed color based on where the hands were). There's also great library support and a pretty big community. If I happen to dig up that clock I'll post it.
I have nothing to share, but check out this site it has a bunch of different processing stuff, <a href="http://createdigitalmotion.com/tag/processingorg/" rel="nofollow">http://createdigitalmotion.com/tag/processingorg/</a> the best site is their site and the forums, just cruise them and you'll find all sorts of good stuff
Great stuff. It's very easy to dive in. The editor is clunky, though.<p>I'm currently working on a series of programs that process webcam input and render "magic mirrors" made out of words, wood, swimming fish, etc.