Update February 21, 2009
The US monthly amateur radio magazine CQ has in its January 2009 issue a very interesting and fascinating interview with John Kanzius, whose US amateur radio call sign is K3TUP. John, who unluckely has a bad form of cancer, is a brilliant inventor. In 2006 in the middle of the night he got an idea how to cure cancer by using radio waves. So he immediately started to build a machine out of his amateur radio gear and his wife´s pie plates and injecting copper sulfate into hot dogs! Later on during a demonstration in Canada salt water in a test tube caught fire! This second thing is also under research now. The CQ magazine has a special article about getting energy from salt water. You can download the article here:
Here you can read the article Sending cancer a signal in Los Angeles Times from November 11 2007.
Information in more detail can be found in Wikipedia here.