One week ago, I caved to the temptation and got an iPhone 3G S. Today, as the first of 30 hackpact creations, I installed the SDK plus memo's iPhone extensions for openFrameworks and hacked together my first app. OpenGL alpha blending + multi-particle grabbing/throwing /bouncing = fun.
Next step is to go through the arduous process of enrolling in the iPhone Developer Program in order to be able to even test it on the device itself. Sigh.