Partner in one of the city's largest window-washing companies and son of sports agent Steve Zucker, Mr. Zucker is perhaps best known as a whirling dervish on Chicago's philanthropic scene. Since Mr. Zucker entered the workforce in 1988 as a LaSalle National Bank bond broker, his civic activism has been nearly constant -- from his founding of the Junior Board of the Juvenile Diabetes Foundation to his co-chair role this year for the Art on the Block party with Maggie Daley for the Chicago Cultural Center's Gallery 37 project.