Birdhouse  Apr 13 2009

The introduction video for Birdhouse is just really fantastic; the best iPhone app intro video in the universe probably.

This a bit old but the dude  Mar 28 2008

This a bit old but the dude that runs the stylish cameron i/o site (who is coincidentially named Cameron) built a trumpet-like bell for the iPhone out of a used toilet paper tube.

I wanted to listen to my music in the shower but the iPhone's speaker would get lost in the noise from the shower. So I directed the iPhone's audio straight towards me. Worked pretty well. Just ask my neighbors.