I don't know about favourite, but ones that I always listen to over and again...
Unsent Letter - Machine Gun Fellatio (Bring it on)
The Charlie Trilogy - The Whitlams (Eternal Nightcap)
Step Back - Superheist (The Prize Recruit)
Notables would include songs off Metallica-Load, nearly anything released by Machine Gun Fellatio, Nirvana-Teen Spirit and Love Buzz, Silverchair-Emotion Sickness, Smashing Pumpkins-the entire Mellon Collie and the Infinite Sadness... oh, and I'm really liking the Moutain Goats at the moment.