Not a Tamil movie. But someone was discussing about a single shot scene in E20U18 movie. Considering the interest in that post, let me introduce you to the Best Single Shot taken in a movie ever. Guess where all the camera went.
Movie - Soy Cuba (I am Cuba) (1964) Trivia - This scene fictionalizes funeral of Fidel Castro. Being made during peak Cold War, this remained hidden until the 21st century. Since then, this scene has awed many.