I just love the new toy that is http://labs.google.com/sets. Sometimes it's dead on -- it fills out newton and einstein with Kepler, Galileo, Aristotle, Copernicus, Hawking, Ptolemy, Eddison, Brahe, Bunsen, Plato and Heisenberg. Sometimes it's not:
Bush
Saddam
Nirvana
Pearl Jam
Radiohead
Sauder
Gottlieb
Francis
Frankenthaler
Gorky
Martin
O'Sullivan
Clinton