Joern Utzon is the architect who designed the famous Sydney Opera House, one of Australia's most prominent opera houses.

I am studying to be an architect so he's kind of a big deal, and today the opera house is one of the most iconic buildings in the world with its multiple white sails. It's said that Utzon got his inspiration from peeling an orange, which gives you an idea of how arbitrary design inspirations can be.
Regardless, the man was fantastic at what he did and the Sydney Opera House is darkening in mourning, which is a nice way to go.
http://www.salon.com/wires/ap/world/2008/11/29/D94P32080_as_australia_utzon/index.html