1998 marked the centennial of which war?

Which 1998 film has a playwright working on "Romeo and Ethel the Pirate's Daughter"? Jeff Bridges plays a Los Angeles slacker who loves bowling in which 1998 film? The 1998 film "Life Is Beautiful" came from which country? In which 1998 film is a comet on a collision course with Earth? Matt Damon played the title paratrooper in which 1998 war film? Who defeated New York senator Alfonse D'Amato in 1998? Richard Burbage, Queen Elizabeth and Viola de Lesseps are characters in which 1998 film? Which actor played "The Dude", who says his rug "really tied the room together"?