Wanted this for ages, so thought I'd finally add it. Thanks for all the work you put into keeping this running in the face of Apple's constant changes :-)
Fix two category names
Apple has renamed Mac OS X to OS X.
Add a 'System' entry to the popup.
Makes it easier to find system version & build (when relevant) or file OS bugs.
In case it isn't clear: This adds a "System" entry to the running applications popup, so you can pick the system version & build number easily when filing OS bugs.