Oh, those smarties at Google with all their tools! Last week, a client was having some issues with their Google Analytics tracking, trying to segment visitors that were logged in versus those who were not. Central to the troubleshooting was ensuring the right events and data were being passed in to Google. I showed him how I would troubleshoot using the Network tab in Google Chrome's Developer Tools.
Some of the reviews are spotty… questioning whether or not it supports Universal Analytics (it states that it does). We're not upgraded to Universal Analytics (yet) but it appears to be working okay for me.