If you've ever had the pleasure of editing a job that calls other jobs, that calls even more jobs you understand what a headache that can turn into.
This script walks through the SYSJOBS and SYSJOB STEPS tables and builds the parent/child job hierarchy. It then analyzes each job step, looking for any SSIS job steps and subsequent config files used, if any. (This part can be easily changed to look for anything)
This was borne out of a need to change a rather large job hierarchy after one of our ETL servers failed and everything needed to be redirected to a new box.
Please feel free to email me if you have any questions/recommendations
raysot @ comcast DOT net