Dark matter dominates the mass density of the Universe, yet we know little about its nature. Cosmic flows, deviations from the uniform Hubble expansion, are sensitive to the quantity and spatial distribution of dark matter on scales of hundreds of millions of light-years.

Thirteen years ago, a group of astronomers dubbed the "Seven Samurai" claimed to have discovered a huge concentration of dark matter: the "Great Attractor". Since that discovery there has been an enormous observational effort to map the large-scale distribution of both galaxies and dark matter.

I will review recent results, focussing on our recently-completed study. This survey, which spans a volume a billion light-years in diameter, has yielded some intriguing results on the smoothness of the Universe on very large scales and the nature of dark matter.