This is a fantastic mashup I found at MySpace.com via Boing Boing. It is an old clip of Al Minns and Leon James, two Lindy Hop jazz dancers circa 1920s and 30s. Updates at the Boing Boing post say the two are dancing the Charleston. I’ll have to take their word for it.

And here’s a YouTube clip from 7roach of the two dancers, sans hip hop: