 Val Kilmer (qv) has been quoted as saying that screenwriter  Kevin Jarre (qv) insisted the actors wear real wool costumes, in  accordance with the time period. During the scene in the Birdcage  Theater, Val Kilmer says, a thermometer was placed on the set, and  it read 134 degrees Fahrenheit. Kilmer suggested jokingly that this  was the reason Doc Holliday killed so many people: "Its just, like,  he wore wool in the summer, in the Arizona territory, and that made  him mad."