Photos: A Bill Gates retrospective

Their day jobs are vastly different, but Gates and Bono (left, seen here in a photo from February 2002) have a shared interest in charitable work in the developing world. Their good deeds led Time magazine to name the two, along with Melinda Gates, as its Persons of the Year for 2005. Bono has also stayed at the Gates' mansion when U2 performed in nearby Seattle.

Photo by AFP/Jeff Christensen