A coworker recently clued me in on Webgrind, a platform independent, browser-based PHP profiling application. I was impressed with it, and thought I'd contribute to the installation and usage instructions that are floating around the web with my specific setup.
Assumes you're using MAMP on OS X, but you can probably adapt.
I presented a session on "Essential Drupal Modules" at today's Boise Code Camp. The talk highlighted the modules most every Drupal installation should have, as well as a number of gap-fitting modules that fill a few UI and functionality deficits found in Drupal core. Additionally I included a segment on finding and evaluating modules.