Not sure where the OP is based, but

Certainly within Australia, Finnair offers some nice linkups with CX,QF,BA
eg.
Business Sydney-Bangkok-Helsinki-New York-Sydney for A$6,769
http://www.bestflights.com.au/cgi-bi...indetails=7257

Restriction that at least one long-hall sector must be on AY.
A lot cheaper than the equivalent DONE fares in Australia

I doubt the equivalent Y fares are much cheaper given the LONE fares are often not much more than a single return segment.