Paul Allen in a tuxedo

Businessman Paul Allen attends a gala dinner for Time magazine's "100 Most Influential People in the World" publication. This was in New York City on May 8, 2008. (Yes, Allen was on the top 100 list that year.) Paul Allen was born in January of 1953, so he was 55 when this photo was taken. He and Bill Gates founded the software giant Microsoft in 1975.

See our biography of Paul Allen