Filter's always been a saving grace for me. They rock... pure and simple. And I don't get tired of'em.
The music in the Milwaukee area radio stations suck arse. 96.5 is always good, but I find they play the saaaaaame artists alllll the tiiiiime.
102.1 plays nothing but the *new, non-emotion ***** (ie, the thousands punk clones, and other new crap I just can't stand) They remind me of the KISS FM of rock... owned by corporate America. WLUM, 102.9 is decent, but I also see them going the route of 102.1.
Whenever I drive west to Madison, the automatic choice is 101.5 (forgot the call letters). A great mix of my favs with an ever-loving dose of classic rock.
Might I suggest not going for a specific genre, but start looking for specific groups. Skimming my collection... Pink Floyd, Thin Lizzy, Boston, Kansas, Huey Lewis, Ozzy, good ol' Phil Collins, Cheap Trick,
Filter, Rage, Rolling Stones, Scorpions, Styx, Supertramp, Yes, The Ramones, The Who, Tom Petty, U2, Warrant, Van Morrison, RUSH... just to name a few (er, a lot)
MP3.com also has a ton of artists just looking for attention...
however, MP3.com was a nice sight up until recently (maybe a few months?) They're asking for money and supposedly throw some hidden adware onto your HD.
As far as eletronica goes.. trance has my interest. Some good mixes can be found at
http://www.mjduke.com . Some HUGE 80+ minute mixes can be found there. DJ mjDuke and DJ Tiesto are nice.