Go and see The Lego Movie. Drop whatever you are doing and go and see The Lego Movie. Right now. Immediately. Get in a car or on a bus or run, don’t walk, to your nearest cinema to go and see The Lego Movie now. Do it. Vamanos.
Julie Andrews made her big screen debut and won an Oscar for her portrayal of the "practically perfect" nanny who revolutionizes Banks family in this supercalifragilisticexpialidocious classic. Dick Van Dyke amazes in the roles of chimney sweep, Bert, and bank chairman, Mr. Dawes (all with terrible cockney accent too).
During the Supercalifragilisticexpialidocious song, one of the female animated cockney singers in the background sang the song too well, the directors wanted her to sing it in more of a common less professional manner. So Julie Andrews provided the voice of this character instead.