He’s been called “The man who invented the twentieth century”. My website has a page about Tesla’s role in the development of computers.
Tesla’s inventions dispensed with conventional wisdom and went back to first principles. There’s an elegant simplicity to his three-phase AC electric power generation, transmission, and distribution systems. Why THREE phases? He had a special affection for the number 3. He believed that 3 was fundamental building block of the universe.
If you’re not familiar with Tesla, you can start with Wikipedia: http://en.wikipedia.org/wiki/Nikola_Tesla