the film as "an outrageous black comedy". Just before filming began, Kubrick hired noted journalist and satirical author Terry Southern to transform the script into its final form, a black comedy, loaded with sexual innuendo, becoming a film which showed Kubrick's talents as a "unique kind of absurdist" according to the film scholar Abrams. Southern made major contributions to the final script, and was co-credited (above Peter George) in the film's opening titles; his perceived role in the writing later led to a public rift between Kubrick and Peter George, who subsequently complained in a letter to Life magazine that Southern's intense but relatively brief (November 16 to December 28, 1962) involvement with the project was being given undue prominence in the media, while his own role as the author of the film's source novel, and his ten-month stint as the script's co-writer, were being downplayed – a perception Kubrick evidently did little to address. Kubrick found that Dr. Strangelove, a $2 million production which employed what became the "first important visual effects crew in the world", would be impossible to make in the U.S. for various technical and political reasons, forcing him to move production to England. It was shot in 15 weeks, ending in April 1963, after which Kubrick spent eight months editing it. Peter Sellers again agreed to work with Kubrick, and ended up playing three different roles in the film. Upon release, the film stirred up much controversy and mixed opinions. The New York Times film critic Bosley Crowther worried that it was a "discredit and even contempt for our whole defense establishment ... the most shattering sick joke I've ever come across", while Robert Brustein of Out of This World in a February 1970 article called it a "juvenalian satire". Kubrick responded to the criticism, stating: "A satirist is someone who has a very skeptical view of human nature, but who still has the optimism to make some sort of a joke out of it. However brutal that joke might be". Today, the film is considered to be one of the sharpest comedy films ever made, and holds a near-perfect 98% rating on Rotten Tomatoes based on 91 reviews . It was named the 39th-greatest American film and third-greatest American comedy film of all time by the American Film Institute, and in 2010, it was named the sixth-best comedy film of all time by The