I thought I would also add, I've found Pomodoro to mesh really nicely with Neil Fiore's THE NOW HABIT methods as well. It is the very essence of "consistent starting," and since a pomorodo with break is 30 minutes, it works very nicely in Fiore's unschedule.

I use GTD methodology to define my work, and pomodoro to accomplish the work I've defined. I've found it to be an almost seamless combination.