We've fallen in love with the convenience of Quick Look here at TUAW. With the click of the spacebar, you can preview documents right in the Finder. It's very useful.
Now, look what happens when you apply Quick Look to an Automator workflow: You're presented with the entire workflow, step by step. Say you need to remember how you pulled off a particular process or sequence of steps. No need to open the thing with Automator, just take a quick "peek" to jog your memory. We love it.