Oddee has a neat post about the 15 Craziest Personal Names. This one's my favorite:
Yahoo Serious (1953 - ), originally known as Greg Pead (name-change by deed poll in 1980), is an Australian film actor and director. He is best known for his 1988 comedy, Young Einstein. He also created Reckless Kelly in 1993 and Mr. Accident in 2000. Serious writes, directs, produces, and stars in all his own movies.
In 1988, Yahoo Serious wrote, produced, and directed Young Einstein, an intentionally inaccurate movie portraying Albert Einstein as a young farmer in Tasmania who discovers rock music and surfing, romances Marie Curie, and derives the formula E=mc² while trying to discover a means of creating beer bubbles. The movie was an international hit, grossing over $100 million worldwide, and propelling Serious to stardom.
In August 2000, Yahoo Serious tried to sue the search engine Yahoo! for trademark infringement. The case was quickly thrown out because Serious could not prove that he sells products or services under the name "Yahoo," and therefore could not prove that he suffered harm or confusion due to the search engine.