1930s with the onset of swing
[ame="http://www.youtube.com/watch?v=mTg5V2oA_hY"]YouTube- Lindy Hop - Hellzapoppin (1941)[/ame]
[ame="http://www.youtube.com/watch?v=ESc5D5lWQQ0"]YouTube- Swing Dancing from the Movie Twiced Blessed (1945)[/ame]
....through the 1950s and rock 'n' roll....great dancing.
I love this stuff.
[ame="http://www.youtube.com/watch?v=NN6eWf4XpiE"]YouTube- Bill Haley - Rip It Up[/ame]