Former U.S. president Bill Clinton will appear on Oprah Winfrey next Tuesday, September 4, in a interview to promote "Giving," a book on philanthropy and civic action. Clinton's appearance was announced on Monday in an email - "The first interview about his new passion!" - sent to members of Winfrey's book club. "Giving" praises the talk show queen's Angel Network, which has donated millions of dollars around the world. Clinton has other interviews next week, including a sit-down with Larry King on CNN and an appearance on Late Night with David Letterman.