Top Hat (1935)

The Cheek to Cheek number, Top Hat (1935) Fred Astaire and Ginger Rogers glide through Irving Berlin's song in one unhurried routine, with Rogers in the ostrich-feather gown that famously shed feathers during the dance; watch for them drifting off it. The film predates most grandparents, but the song is one many will hum along to, and it suits anyone who loved a dance hall or a ballroom program. Ask who taught them to dance, and where they went to do it.