Julie Andrews made her screen debut and won an Oscar for her portrayal of the "practically perfect" nanny who revolutionizes the prim and proper Banks family. Dick Van Dyke's unforgettable rendition of "Chim Chim Cheree" won an Oscar for best song (he's also great in the dual role of chimney sweep Bert and crotchety bank chairman Mr. Dawes Sr.), and Richard and Roger Sherman netted an Oscar for best score. It's supercalifragilisticexpialidocious!