They say you have to start somewhere - and although, historically, Kraftwerk weren´t the only musicians committed to electronic music before the world took notice, they are the most influential band of all time and it is a fair assessment to say that without them there would be no Techno, no House or any of these styles and certainly there wouldn´t be all that came after them: Depeche Mode, Erasure, Human League and so on.
Despite the reputation that electropop suffers from e.g. "they are all bloody knob-twisters..." - all Kraftwerk members (or Ex-Members for that matter) are well trained musicians.
Their catalogue/legacy includes tunes like: „The Model“, „The Robots“, „Autobahn“, „Boing Boom Tchak“ or „Radioactivity“ and „Tour de France“.
Albums you might want to listen to are:
Kraftwerk – Trans Europe Express
Kraftwerk – Autobahn
Kraftwerk – Computerworld
Kraftwerk – Electric Cafe
Electric Music – Esperanto
Karl Bartos – Communication
DVD: “Minimum – Maximum” – funnily enough you will notice to hear their influence on a lot of productions. Trust me on this one