2001: A Space Odyssey is a very beautiful and interesting film directed by Stanly Kubrick. Personally I have not finished watching the film but I do know the basis from references in shows and other films I have seen. I really like the match shot used for the bone and the ship flying through space as it is crossed with a very iconic and lovely soundtrack known even by people that have not seen the film.
Hal has also become an iconic character coming up in many T.V shows and movies as new characters but still is a corrupt machine such examples being The Simpsons, Futurama and Wall.E.
As well as critiques essentially hating the film the public loved it and it has now become an iconic film, a masterpiece if you will, to the film industry and many people look to his work. Hal is also a very bold, basic yet frightening character as his calmness in such distraught situations causes unsettling across the audience as it is unusual to be so settled in a manic situation as people die.