Hidden Cameos
The film's martial arts choreographer, Cheung-Yun Yuen, can be seen as a passenger in first-class near the beginning of the movie. He's the one teaching two women how to say "Thank you" in Cantonese.
Arnold Schwarzenegger and Maria Shriver make a cameo at the Race Track. They are wearing sunglasses standing in a group of people behind Roger Corwin (Tim Curry).