:::You're never heard of Architecture in Helsinki, Augie March or the Avalanches? o (The others have just been tagged in after, AFAICT). 
 :::*AiH were nominated for best Adult Contemporary ARIA 2005. (A very odd nomination category.) They have had some interest O/S. 
 :::*Augie March... wow... have released three well-reviewed albums, the latest of which debuted in the top 10 (Moo, you bloody choir) and has been nominated for a J Award. 
 :::*The Avalanches are actually more popular in the UK I believe, they're certainly one of our biggest dance-type acts internationally. Only released Since I Left You so far but man, it's a classic album. 
 :::But "music that is actually good" - while I rather agree, it's a bad line for an encyclopedia. )  (translate?)