"Cheek to Cheek" is a song written by Irving Berlin, and first performed by Fred Astaire in the movie Top Hat (1935).
The song is probably most famous for its opening lines, "Heaven, I'm in heaven, and my heart beats so that I can hardly speak..." and was featured in the Astaire-Rogers movie, soon becoming a standard sung by many other artists, including Bing Crosby, Louis Armstrong, Ella Fitzgerald, Eva Cassidy, Doris Day, Jane Monheit and Frank Sinatra.
The song, as sung by Astaire and Fitzgerald, is featured in the movie The English Patient. It is sung by Kenneth Branagh in Love's Labour's Lost. It is also shown being performed in The Green Mile, Rain Man and The Purple Rose of Cairo when Top Hat is being viewed.