Kraut Rock.

Never been a fan of Julian Cope's music but the man does seem to know his Krautrock. He's written a book on the subject including a list of his Top 50 essential albums from the genre. Worth a look even if he tends to favor the really obscure.

If you think the whole idea of Germans rocking out 1970s stylee sounds like a premium time waster for cash-flush collectors, I highly recommend checking out Can ("Monster Movie" = Early Floyd meets Early Sabbath; "Ege Bamaysi" = Stereolab meets James Brown), Neu! ("Neu! 75" = Sonic Youth meets Kraftwerk), and Popul Vuh ("Hosianna Mantra" = Brian Eno goes to India). All satisfaction guaranteed. And that's just the tip of the Teutonic iceberg.