Of course this will only show you what modules were actually used on a particular run of the program. That's not guaranteed to get you every module that may be used in your code, e.g. if you require a module in some conditional, to name just one possible way to avoid acutally using modules mentioned in your code.
--DrWhy
"If God had meant for us to think for ourselves he would have given us brains. Oh, wait..."
Comment on Re^2: How do you audit what Perl modules you use?