The 1982 classic, which was directed by Steven Spielberg and launched a young Drew Barrymore's Hollywood career, became famous for the phrase "E.T, phone home."
In the film, a group of young children look after E.T and attempt to get him back to his home planet.
Second place in the poll went to Pixar's 1996 hit Toy Story, followed by Disney classic Mary Poppins, with The Lion King and The Wizard of Oz completing the top five.
A spokesman for www.onepoll.com, which carried out the research, said: ''The films featured in the poll span across decades and all have something special about them.
''E.T is a movie the whole family can gather around to watch and it never fails to bring a tear to someone's eye."
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