I just love the fact that Johns children are such a big part of the show. Not just Omar, but last night's ep with his grandsom Theo and the flashbacks to his son Rosey.
One of the things I always miss in shows with immortals, is that they constantly mention the age as if it just a number, but they rarely give us a really good idea of just how old this person is.
Seeing John's children, and grandchildren and great grandchildren does more to show how old this guy is, than menioning his age a hundred times over.
PS: I just love Omar.