Newsweek columnist Fareed Zakaria breaks into the television game Friday with a new half-hour show, "Foreign Exchange," on 100 PBS stations. He interviews Egyptian dissident Saad Eddin Ibrahim, talks to the author of a book on Europe's social-welfare states, and runs a freelancer's piece about environmental protection in Russia. "I'm hoping to avoid the 'Crossfire'-type format," Zakaria says, but "I don't want the show to have the pacing of a French movie."