In this paper, I will present an abridged overview of what is presented in my keynote lecture. I will recount some of the initial history of microchannel two-phase flow and boiling work by others that enticed me to join into the development of this field and will then focus on some my own team's work at the EPFL in Lausanne during the last 20 years, covering work on microchannel flow boiling, new flow visualization/image processing techniques, flow stabilization, heat transfer models, flow pattern maps, micro-two-phase cooling systems, and numerical modeling of bubbly/slug flows (not all in this paper), with much effort to get micro-two-phase cooling into practice. The lecture gives a visual view of microchannel flow boiling, some prediction methods and some prototype units.