 Filmmaker and PBS producer Rick McKay (qv) was hired by director  Mike Nichols (I) (qv), months before filming of "Birdcage" began,  to go to Paris, London, San Francisco and Atlanta to make a feature  length documentary about drag queens. McKay did thorough research to  find drag queens all over the world to interview and to film in  performance. This finished documentary was used to train  Nathan Lane (qv) and Robin Williams (I) (qv).