I'm working on the Particle tutorial. I'm having a weird problem related to mapping a texture to particles, which is necessary to accomplish some of the cooler effects (though I'm unsure if the iPhone has enough horsepower to do much with it). I'm sure it's a stupid thing - a configuration I forgot to enable or something like that, because everything seems to be right. I'm hoping that when I look at it today with a fresh, moderately-well-rested, and only slightly-hungover eye, I'll see what I was doing and can finish the tutorial.
I'm working at Moscone South, and will continue to do so as long as I can find a power outlet at some point.