Scripting Aperture
Aperture is shipping, and the photogs rejoiced! Well, not all of them, but a bunch of people seem excited about the app. However, I am never truly happy unless an application is scriptable, and yes I live a sad existence thank you very much.
Luckily for me Adam Tow has written up his experiences scripting Aperture. Give it a read for ideas about how you can use the magic that is Applescript to accomplish photo workflow tasks.