Eugene Volokh's hobby is "Fun Name Change Cases." Such as that of the man who changed his name to "They" (no last name).
OK, said a Missouri judge to a petition by the inventor formerly known as Andrew Wilson. They (not they, They) explained the rationale: "'They do this,' or 'They're to blame for that.' Who is this 'they' everyone talks about? 'They' accomplish such great things. Somebody had to take responsibility." [Link, via kottke]