One of Hollywood's most memorable kisses took place between Cary Grant and Ingrid Bergman in the 1946 film Notorious. What's noteworthy is that it happened during the years of the Hays Code (1930-1968) when "scenes of passion" were extremely restricted and kisses were limited to seconds. To get around the regulations, director Alfred Hitchcock cleverly filmed Grant and Bergman exchanging a series of interrupted kisses as Grant answers a telephone call. So each kiss takes just moments, but the entire scene is nearly three minutes. Submit your photograph or artwork to the Science of Kissing Gallery and remember to include relevant links. The Science of Kissing debuts January 2011.