Event Tracking Tracker, or ETT for short, is a Google Chrome extension that allows you to easily read which Google Analytics events have been tracked on the pages you've interacted with.
The best part about it is that the tracking of these events is persistent across your session, so it makes debugging tracking tags a doddle!
The extension will display all the potential parameters that an tracking event could contain (i.e. category, action, label and value) and will collate a list of all events interacted with over your session.
It can be downloaded here: https://chrome.google.com/webstore/detail/event-tracking-tracker/npjkfahkbgoagkfpkidpjdemjjmmbcim
Or forked on GitHub here: https://github.com/peterstayne/GA-Event-Tracking-Tracker