BERLIN Cirque du Soleil will kick off its first permanent European show next year in Berlin 's central Potsdamer Platz, the Canadian circus company announced on Nov. 20, promising a production that would push the boundaries of the imagination. The show, called Alize, will require the Theater at Potsdamer Platz, which hosts scores of celebrities during February's Berlin Film Festival, to be redesigned to meet the production's unique technical requirements, the company said in a statement. The