Open a new, blank document window. Now drag a folder from your hard drive into the new empty window. After a bit of processing time, BBEdit will display a hierarchical (sub-levels are indented) list of every file and folder within the folder! You can do this for application bundles to see what they contain, or (and this is pretty amazing) you can even drop a hard drive icon into the document! If you do, be prepared to wait a few minutes (depending on the size of the drive), but you'll be rewarded with a list of every file in every folder on the drive.
This seems like the easiest way I've yet to discover to get a complete printed folder hierarchy in a relatively easy to read format.

