They must have at least 2 albums released.

My list: Joy Division, LCD Soundsystem, The KLF, Royksopp, Massive Attack, Crystal Castles, The Stone Roses, School of Seven Bells, Boards of Canada, Yeah Yeah Yeahs, The Field, Ladytron, Slowdive, Lush, Ott, My Bloody Valentine, Metric, Kraftwerk (some might argue about Electric Cafe, but for me it's great) and others.

You?