Ken, 

Here's a report for OSX 10.6.6.  Keep in mind that I already have the vast majority of relevant ports installed, so at least the port-based install time was minimal ;). Also, I got lazy and skipped a couple at the end while I was waiting for ogre to (probably not) compile.

Sprinkled throughout there are minor reports about macports dependencies. Major sticking points are: 

test_plugins has undefined symbols problems in poco_lite.  **THIS IS A KILLER, CAUSES MANY STACKS TO FAIL BUILD**
kdl has a small bug in OSX build (see "geometry") **THIS IS AN EASY FIX, PATCH ATTACHED**
A few stacks seem to depend on stacks that aren't fetched. There should be a policy that if a stack is fetched, so are its dependencies. Examples are "documentation", "geometry_tutorials"

A note about turtle_teleop: This stack is currently not being fetched and causes some stacks, e.g. geometry_tutorials, not to build. Historically, this has been a nice example, but it required work to get it to work on OSX. This is because keyboard_teleop works on OSX but joystick_teleop does not (for bluetooth reasons). In the future, it would be nice to split keyboard_teleop and joystick_teleop. 

--Nick