I think my favorite relationship in Cataclysm was the father/son bonding and relationship building that went on between Eitrigg and his son Ariok. Eitrigg seems to want to bring his son along for the ride as he redeems his people and weeds out the bad blood amongst the Blackrock clan. Ariok is proud to serve under his father, and that relationship feels real, honest, and not forced. Just a father and son doing something together that they love -- subterfuge and war.
Head on over to the thread and help out Nyorloth with his first post on the lore forums. Another hearty welcome to Nyorloth!