Another under-appreciated interface that I find useful and actually enjoyable is mouse gestures. A simple example of this is swiping left or right with a Mac tr

Another under-appreciated interface that I find useful and actually enjoyable is mouse gestures. A simple example of this is swiping left or right with a Mac trackpad to navigate history in a browser. Older Opera browsers also had a rich mouse gesture interface with which you could right-click-drag your mouse in various patterns (L, backwards L, straight down, etc...) to perform various actions. Similar to keyboard shortcuts that keep your hands on the keyboard in textual interfaces, mouse gestures ensure your hand doesn't leave the mouse in programs where the mouse is the dominant mode of interaction, like in CAD design. One of my favorite features of SolidWorks (when I still did mechanical design) was their mouse gestures. From their docs [1], "You can use mouse gestures by right-dragging in the graphics area to invoke a preassigned tool or macro from a drawing, part, assembly, or sketch." That means I could draw a box, swipe, extrude, swipe, draw some lines, swipe, draw a circle, swipe, cut, and be done. Because it was customizable, I could perform most of my most common actions without navigating menus or my mouse ever leaving the drawing area. [1] http://help.solidworks.com/2012/English/SolidWorks/sldworks/t_using_mouse_gestures.htm http://help.solidworks.com/2012/English/SolidWorks/sldworks/... Edit: That link also has a picture of the mouse gesture interface for those interested.