At the risk of this counting as a cross posting, and with all due credit to cmcbugg for the actual post, I thought it worth pointing this out here since the "Other Middle East and Africa Frequent Flyer Programs" thread can be a bit obscure:

cmcbugg posted about an upcoming JNB//EZE route on SA. Original post is here. Will open up a lot of new options for RTW tickets.

All that's missing now is a TPAC in the Sourthern Hemisphere.