I remember weighing up either getting the iPhone at the time, the Nexus One, and the Nokia N900. It was a close call between the Nexus and the Nokia, mostly because I wanted those sweet sweet Android apps that everyone had, but ultimately I went with the N900 and it changed my life.

I could write my own Python on the train, I learned C and C++ over the course of a long car trip, and even started writing my own Apps on the device itself. Can you imagine that? On-device app development? In any language you want? It was unheard of at the time, and is relatively unheard of even now.