TODO and FIXME plugin. If you start comment from TODO or FIXME then window Tasks will contain the whole list of them with references to the code (Window > Other View > General > Tasks) and you will be able to manage this list.
If you want to automate a code review process regarding coding convention then you can install Flex Formatter plugin in FlexBuilder or eclipse and then configure formatting for ActionScript and MXML with help of coding convention checklist document (example of ActionScript coding convention checklist).
I was trying to install Ant in Flex Builder 3 using steps described here.
But after step ‘Click “Install all” to install Java Development Tools’ I got such errors:
Unable to complete action for feature “Eclipse Platform” due to errors.
Unable to complete action for feature “Eclipse RCP” due to errors.
Unable to create file “/C:/Program Files/Adobe/Flex Builder 3/plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.3.R33x_v20080118\META-INF/eclipse.inf”. [C:\Program Files\Adobe\Flex Builder 3\plugins\org.eclipse.equinox.launcher.win32.win32.x86_1.0.3.R33x_v20080118\META-INF\eclipse.inf (Access denied)]
If you have Windows Vista then you can fix the problem this way: