1. An ordinance most mormons don't know exists.
2. An ordinance given to those mormon couples deemed worthy, by the upper mormon hierarchy (the prophets and apostles), of guaranteed salvation if you will. In the first anointing, and mormon endowment, and sealing, they were promised they would be made Gods and Goddesses if they were faithful in this life to the church. Now they have proven themselves worthy and are anointed a second time, and sealed up unto godhood, i.e., they are now guaranteed to become a God and Goddess, because they have been so righteous.
It consists of two parts - the first one in the temple, and the second one by the couple in their own home.