Small jets of liquid are useful in numerous applications, such as inkjet printing, eye surgery and for cleaning of solid surfaces. How can one generate very small and fast-moving jets? In this talk we will show ultra-high-speed video imaging studies, which are aimed at answering this question. We are guided from naturally occurring jetting, for example when an oscillating drop shoots out a jet from its apex. We will also show some ways to generate regular jets which are only a few micrometers in diameter and can emerge at 200 m/s. Numerous high-speed videos will be shown, taken at frame-rates up to 1 million fps.