Mary Poppins

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This much-loved, children's musical fantasy about a magical London nanny was remarkably Julie Andrews' cinema debut. She won the Best Actress Oscar for her portrayal of Mary Poppins, a magical nanny who teaches a cold-hearted banker's children about the world around them and teaches their father to love them.

Even more remarkable is that Dick Van Dyke was so desperate to play the part of chimney sweep Bert (he also played Mr Dawes Senior, the bank chairman), that he said he didn't want paying. Which means he actually thought his accent was good.

Apparently the writer of the Mary Poppins books, PL Travers, thought that Julie Andrews casting was about the only thing that Walt Disney got right. She didn't even like the Oscar winning score, which included another Oscar winner - Chim-Chim Cheree - as well as classics like A Spoon Full of Sugar and Supercalifragilisticexpialidocious.