Do you have a StackOverflowError thrown deep inside some (probably 3rd party) code like EclipseLink's Criteria API? Are you trying to track down exactly where it's being thrown and under what circumstances? Is it driving you insane?
Use an exception breakpoint. In Netbeans: Debug -> New Breakpoint. Breakpoint type "Exception". Specify the exception class being thrown, constrain the throwing class if desired, and you're set.
This made my life a lot, lot, LOT easier recently. Thanks again NetBeans.