Well, as for techno being under-rated - I would hardly call it that - at least not around here - there are several clubs in the area that play pretty much only techno...
I'm not so sure what I could say about "Electronica" though - I mean - that's a fairly wide spectrum of music and alot of very different styles seem to fit nicely under that general heading...
Personally, I love the stuff - electronica in general... I do tend to find that techno often feels a little too happy for my tastes, but I can appreciate it just the same.
Country has been mentioned a few times and there's a ton of that around here as well...if you count the jukebox down at der Vaffle Hausen...
I like some older country - never got into any of the newer stuff though... IMO Johnny Cash and Waylon Jennings could kick Billy Ray Cyrus and Garth brooks asses damn near any day of the week... Or maybe I'm just talkin' out of my ass - I do that on occasion...