Keyboard shortcuts are so much more efficient than using the mouse. The only problem: They're hard to remember, especially the ones you don't use all that often. Same goes for things like Terminal commands, Twitter search syntax, multitouch gestures or anything else you can't simply point and click a mouse at.
That's where dashkards come in. Dashkards are cheat sheets for the Mac OS X Dashboard where you can have them handy at the press of a button. Click on the video below for an introduction to dashkards or click one of the application icons below to view the full-sized dashkard.