Today feels something like the ideal to spend a Sunday afternoon: sorting though my Deviation Watch inbox and ... listening to Ishkur's Guide to Electronic Music. All I can say is WOW! This has got to be the single best compendium of electronic music I've seen in a long time. The explanatory texts are quite spot-on too. Well done, Ishkur!
Thanks to Elver for brightening my day with the URL to this guide!