As organizers of NLP@UCSF, we will tell a story of how a community of practice at UCSF around new field of interest - Natural Language Processing - was started and how it turned into a "thing" - with its living "rhythm" of meetups, vibrant and real people connections, intense knowledge sharing, contagious energy and motivation to learn and most importantly, the gift of professional opportunities - both expected and surprising - it keeps giving. We will also share some lessons learned from being the organizers of this CoP - things that worked and didn't, with the aim of inspiring others to create their own communities!