Joan Collins kept a cool, cosmopolitan air about her on “Dynasty,” even when ad-libbing during a famous cameo appearance by Henry Kissinger, the result of the show shooting at a real gala ball in Denver. The director told Collins to say something to Kissinger, who had agreed simply to greet her character by name. Collins quickly tried to think of what Alexis would say to the statesman and chose, “Henry, darling, I haven’t seen you since we last met in Portofino, it was fun!”
