Unknown Pleasures: fantastic album, fantastic graphic design work by Peter Saville. It turns out it makes for a fantastic animated GIF as well from the Imaginary Foundation.
For those of you who don’t know, that image is a record of the signal for the first pulsar ever discovered. Pulsars emit regular bursts of radiation as they rotate rapidly, so it was initially thought to be evidence of extraterrestrial existence. It was nicknamed ‘LGM-1’ (for ‘Little Green Men’).