Improve Your Speed!

"Power users work their Macs faster than regular folk do for a variety of reasons. More important than a speedier processor is a speedier computist."

And to become a speedier computist, you really need to get your keyboard combinations down pat. This is good reminder of the most common ones (CTRL-C, CTRL-X, etc) but also goes over how to create your own and provides some of the not-so-common ones that do come in handy if you want to be fast on your keyboard. Besides, your fingers are already on the keyboard so why not use them and save the trackpad? What are your thoughts, do you use keyboard or do you rely on the mouse or trackpad to get your work done? What are some of the more useful keyboard combinations you do use?