Steve Weller runs the excellent blog called Bagelturf. He recently posted some great tips for speeding up your use of Aperture and, generally, your Mac. Recommended reading.
His ebook, by the way, Get Your Hands Around Aperture, is also excellent [link is on his site].
Here's an image for you, just a little fun picture of a Swiss Guard at the Vatican from last fall. I like the way he looks pensive and worried, biting his lip.