Dr. Strangelove - Wikipedia: Excerpt: ″The film is considered one of the best comedy films and one of the greatest films of all time. In 1998, the American Film Institute ranked it 26th in its list of the best American films (in the 2007 edition, the film ranked 39th), and in 2000, it was listed as number three on its list of the funniest American films. In 1989, the United States Library of Congress included Dr. Strangelove as one of the first 25 films selected for preservation in the National Film Registry for being "culturally, historically, or aesthetically significant".[7][8]″
Source: en.wikipedia.org