Well... this one arranges things in a circle in OmniGraffle.
Whatever points up in the shapes you start with will end up pointing into the circle you end up with. Here all the little triangles were pointing up. This means that if you select everything you just made into a circle and do it again they'll all be a bit squint. Easy to straighten them all (using the rotate thingy, wherever it is) before you run it again to avoid disappointment, heartbreak, blood-borne infections, possible reclamation of your land, property and relatives and other untoward side effects.
Sometimes it's easiest to get what you want by making waay more than you want of something, then deleting a few of them when you've got them arranged.
The circle things are circulated in the order that they were created. If you're sneaky with the order that you make things you can make things in a sneaky fashion. In reality, it's probably easier to change and resize (resizing multiple things with the Geometry inspector keeps them all centred nicely) after they're in the right in-a-circle positions.
© 2013 — firstname.lastname@example.org