On Liquid Metal

I don't know if you've read my earlier post about wanting liquid metal that I could control (http://geniusideasandstuffiwant.blogspot.com/2011/09/t-1000.html), but a friend of mine thought of something almost identical at about the same time before I ever mentioned my idea to him, so I thought I should give him some credit. I also just realized that I forgot to mention that I would want to make it go from solid to liquid and vice versa at will.