Most are available on both QF and AA metal and QF and AA Codeshares
SYD-LAX on AA 777-300 for $898 http://goo.gl/flights/aR51
SYD-LAX via MEL on QF 747 for $897 http://goo.gl/flights/D6OT
Also via SFO available on the way back
BNE-LAX on QF/AA $1045 http://goo.gl/flights/TOC5
MEL-LAX on QF/AA $1044 (A380 avail) http://goo.gl/flights/rfeJ
SYD-DFW http://goo.gl/flights/TDNm
SYD-LAX on AA 777-300 for $898 http://goo.gl/flights/aR51
SYD-LAX via MEL on QF 747 for $897 http://goo.gl/flights/D6OT
Also via SFO available on the way back
BNE-LAX on QF/AA $1045 http://goo.gl/flights/TOC5
MEL-LAX on QF/AA $1044 (A380 avail) http://goo.gl/flights/rfeJ
SYD-DFW http://goo.gl/flights/TDNm