Oh yeah Regurgitator are very cool and very not metal. They get inspiration from around the place in a few genres, but they are stuck pretty solidly in their own weird little Alternative bubble. Check out Spiderbait as well for kind of similar stuff, then if you can find it Happyland which was a collaboration between a member from each band. You could try maybe Sonic Animation or Jebediah for other Aussie stuff if you want the non-hard but not really generic stuff. The Superjesus and Powderfinger are alright more standard rock stuff as well.
Pet Shop Boys - I Made My Excuses and Left.