User System Ergonomics Research is a laboratory in which new ideas are constantly put aside ...and picked up later as they become relevant. An important addition to a user interface scenario is made and we find ourselves "needing" to be build and test it. Our thesis is that particular techniques are useful in particular contexts. What device is good for scrolling and pointing? Where are isotonic and isometric control devices useful? Why and where are 3-D interfaces useful? How should an agent draw user attention around an interface? What are forms that will be useful control surfaces on the desk, in the mall or in meetings? This talk will expose you to a smattering of prototype-test stories demonstrating our approach and some exciting research results in these areas.