$867 - SYD/MEL/BNE/OOL to Los Angeles or San Francisco
Travel is from 24/07/2009 -24/11/2009, Book by 11/08/2009
If travelling further out, fares are $1042-1136 (depending on origin) for travel 06/08/2009 -
27/03/2010; book by 19/08/2009
Canada is also $1211 return for travel 11/09/2009 - 15/11/2009; book by 11/08/2009 This is also a very good price.
(I only checked Sydney for specific details so may be different from other origins)