This is a screenshot taken by a Chrome experiment:
http://www.chromeexperiments.com/detail/artistgraph/?f=you just input the name of your favourite artist and it will display a 3d graph of similar groups and/or collaborations,links ecc..
Then you add another name(e.g George Benson)and the graph will expand.Hovering the mouse on the left side list will highlight in red the name, you can zoom,pan rotate ecc. to explore the graph.It only works with Chrome or a browser supporting WebGL, Firefox 4 or Webkit Nightly (Mac).