There's a wideband radio receiver with a web interface hosted at the University of Twente in the Netherlands. It picks up nautical broadcasts and all sorts of creepy signals coming from military vessels and islands. It even gets some US stations.
1. Go to
http://websdr.ewi.utwente.nl:8901/2. Scroll/zoom to a random lit up stripe of the waterfall
3. Click on the dark spot below the waterfall to tune to that band
4. Adjust your type (AM, FM, etc) until audible
5. Adjust your filter width on the right control
6. Post and discuss the frequency, type, and width of stations you find
Physical map of some of the stations:
http://websdr.ewi.utwente.nl:8901/wspr/Full day's visual waterfall:
http://websdr.ewi.utwente.nl:8901/fullday/