All in all the (web) applications that were developed were some great hacks, and great examples of developers making due with minimal resources and no API or great developer tools, both of which Apple is usually known for providing.
Despite wearing a staff badge the last one and a half days while I attended the devcamp, I primarily hacked on an idea originally pitched to me by some of the BMC developers that showed up as "the hard part." I became so entrenched in the hack that I didn't sleep on saturday night trying to finish it in time for the demo session on Sunday afternoon at 2pm, before realizing around 11am on Sunday that I would probably have to clear this with my employer before open sourcing the project. I won't go into too much detail about it, since I can't post source code just yet (i'll post separately when I get the okay), but there are a few things worth noting:
It uses an arbitrary data set, in this case Flickr photos
The math is still off a little bit, so the sizing is also off, and thus, it's not done :)
I have yet to add reflection support
There are still a few rendering issues with the stacks
I'm still working on it, and am preparing to be sued as soon as I polish it up to look closer to Apple's version :)
All in all, despite what some people might say about the commercial aspects of the devcamp (being hosted at Adobe's Townhall here in San Francisco, among other things) I think it was a great success, bringing people together to make do with the "iPhone SDK". I enjoyed myself and can't wait to help organize the next one when Apple finally releases Cocoa ME (Mobile Edition).
Note: Somehow my (more common than not) late night hackery got me in an L.A. Times article, I didn't have the heart to tell the reporter that I do this at least once or twice a week.