An interesting HF spectrum resource sometimes overlooked by radio hobbyist and is available for download every quarter is the ITU International Monitoring Publication. This publication has some really interesting intercepts that would interest the SW broadcast and ute DXer. If you are a milcom type you will find quite a few listings for various military services worldwide in this publication. And the best part, it is one of the few publications you can get free from the ITU organization.
The new bulletin #311 that covers the period 1 Jul 2006 to 30 Sep 2006 (85 pages in pdf format) has been released. You can download that file at http://www.itu.int/ITU-R/terrestrial/monitoring/files/pdffiles/311.pdf